NikonGear'23
Gear Talk => Lens Talk => Topic started by: Jørgen Ramskov on March 14, 2016, 16:54:59
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Inspired by Erik's post about the 6mm Nikkor fisheye, I looked around and found a mint Sigma AF 8mm F3.5 EX DG for sale at a price of 2500DKK / $373. Is it a good lens and is the price fair?
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Ask yourself the relevant question: what am I going to do with this lens?
If you can formulate 2-3 convincing arguments that alter the balance against DKK 2500,- go ahead and buy the sigma.
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yes it's a good price, Jakov has one also great in IR
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Ask yourself the relevant question: what am I going to do with this lens?
If you can formulate 2-3 convincing arguments that alter the balance against DKK 2500,- go ahead and buy the sigma.
You are of course completely right. I have no idea how to shoot with such a lens. It is just instant NAS kicking in, including the fact that the seller is living pretty close by...
I really have no argument to buy the lens other than it being fun.
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I had one for about six months...it was a decent lens.
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Skip the Sigma and use the funds to buy a plane ticket to Edinburgh instead .....then you can use the real thing!!!
Plus I would love to see you in Killin.
Cheers
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I really have no argument to buy the lens other than it being fun.
You still need at least 2 more. Remember you might have to defend spending that money to the Finance Minister of the Household, who may not be you.
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Oh for heaven's sake buy the circular fish!! They are so much fun.
Granted you will likely not be using the lens regularly. But get it, play with it for awhile and see what happens. If you don't like it, sell it on Ebay.
I have this particular Sigma 8/3.5 EX DG and like it very much. Well made and Sigma finishes the lenses nicely.
There is a removable front ring which I think is meant to be a lens shade. Anyway, on an FX camera if you remove the ring you get a larger circle.
Practicing circular composition is an interesting effort.
I use the Sig8 in one of my favorite series. Here is Man in Kitchen with Smiling Pet Cat
(originally shown on Fotozones).
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Skip the Sigma and use the funds to buy a plane ticket to Edinburgh instead .....then you can use the real thing!!!
Plus I would love to see you in Killin.
I would love to go but sadly the dates don't fit in my calendar.
Nice shot Andrea! I guess one argument for buying it would be to practice shooting with a fisheye :)
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Jørgen, I love the lens.
Here are some of many examples on FX and DX :)
It is sharp and you can get really close.
For all the fun and photo opportunities it offers I think that it's a bargain.
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Jakov: Thanks for the comments and especially the images. It's getting harder and harder to resist :)
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Now I want one! Nice images Jakov and Andrea - good circular fisheye shots are very charming :)
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We could have easily opened up a circular fish-eye thread :)
Why not this one...
Thanks!
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Well, I got my question answered for sure :)
But it might be easier to create a new thread than renaming and moving this? Mods: feel free rename and move this thread if you want to.
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Jørgen, I just renamed you thread ;)
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Shouldn't it also be moved away from the Lens Talk subforum?
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Jakov forced me one to buy too. :D
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Shouldn't it also be moved away from the Lens Talk subforum?
I wouldn't know where to move it?
After all we are talking about a peculiar lens that projects a circular image :)
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Oh no Chris, you too :)
This photo is called: "Welcome to my to my living room" (not "Welcome to the terror-dome" a song by Public Enemy).
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Double post :D
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Oh no Chris, you too :)
This photo is called: "Welcome to my to my living room" (not "Welcome to the terror-dome" a song by Public Enemy).
Yes, but I'm still looking for the Heligon
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You can borrow my Heligon whenever you like ;)
I feel the Zenit is going to occupy me in my quest for 'sharp' imagery :D
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You can borrow my Heligon whenever you like ;)
I feel the Zenit is going to occupy me in my quest for 'sharp' imagery :D
Can you take it with you next Sunday?
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Sure!
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I wouldn't know where to move it?
After all we are talking about a peculiar lens that projects a circular image :)
"Recent Work: Portfolios, Serial Threads & Themed Topics" ? But you're the mod ;)
Btw. I just saw your fish shot in the amazing "have you got a thing that can fly" thread. Excellent shot!
Chris: That's a cool shot!
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Its not compleatly circular, but close. The 10,5 mm gets the job done after a smal operation involving the sunshade and a hack saw blade.
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Borge: this is a very convincing example mood magic wise and color wise.
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Børge, WOW!
Aurora is my love, and you captured here phenomenally :)
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Jakov, I really love your fisheye work. Image 2 in post 12 is fantastic! I really dig images 3 and 5 as well. The water drops on the lens in image 5 are really cool. Seeing your guys' hang out pictures makes me live I lived in Europe! :'(
BW, excellent shot. I love the colors!
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Børge: That's really cool!
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Børge, this is amazingly beautiful!
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The aurora can be quite captivating at times, but sometimes, when trying to photograph something else the green glow in the horizon can be quite annoying. Not a big problem at my latitude, but I guess further north, it might be nuisance during the dark periode of the winter.
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Barge, I love the glass globe effect.
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Barge, I love the glass globe effect.
Oh, yes! Well said, Anthony!
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Fisheye Nikkor 8mm f/2.8.
These were already posted some time ago.
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Barge, I love the glass globe effect.
Sorry, I typed Børge, but autocorrect tripped me up.
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I've been called worse names. For three months in the US I was called everything from bird to burger. Most english speaking people end up calling me burger...
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From a random spot session, sometimes we take a couple of random turns, park the car and have to do with whatever is present for a couple of hours.
I happened to have my Peleng 8mm with me for which this session provided some enforced quality time to check it out ;D
This lens is not recommended btw on all full frame Nikon DSLR cameras due to some mirror issues. If memory serves me well I flipped the mirror up a infinity or hyper focal distance, refocussed when needed for really close shots and took an image. And yes the mirror hit the lens a few times figuring out what the most pratical hyper focal distance was :o :o :o
Erik at work
(https://c2.staticflickr.com/2/1550/25527405670_eb6758890d_o.jpg)
D800E with 8/3.5 Peleng, Norway 2013
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The Bear in action with his classic UV setup
(https://c2.staticflickr.com/2/1650/25707134792_1dd466788f_o.jpg)
D800E with Peleng 8/3.5, Norway 2013
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Moi, one of my many flashlights and Eriks bling bling
(https://c2.staticflickr.com/2/1589/25707137342_e6a59b20d8_o.jpg)
D800E with Peleng 8/3.5, Norway 2013
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From another session, Mister R and his Red roadworthy camerabag
(https://c2.staticflickr.com/2/1470/25802033606_07c8515a1c_o.jpg)
D800E with Peleng 8/3.5, Norway 2013
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Noting like summertime in Norway ;) Great captures there JA! ;)
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amazing how you guys find creative uses for this. i only used mine for making 180-360 environment maps that we use in the computer :o :o :o
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Nikon D800E (or D810), with Lensbaby 5.8mm Circular Fisheye. This is just a jpg. I can't take time to find the original just now.
A rose and looking out the window at our dharma center across the way.
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What do you guys recommend for a light weight circular fisheye to lug into the mountains or on long hikes?
D800 and A7RII are the cameras it would be mounted on.
8mm/2.8?
7.5mm/5.6?
8mm/8?
10.5mmDX (Shaved?)
non-Nikkor?
Thanks - John
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Canon EF 8-15mm on the a7r2 :P
A little heavier than some of the other alternatives but also does regular fisheye shots and anything in between. And yes its on my shortlist of lenses to buy as its one of those unique lenses I want to cherry pick from the Canon lineup (others are 100-400 II, 50/1.2, 17mm TS).
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What do you guys recommend for a light weight circular fisheye to lug into the mountains or on long hikes?
D800 and A7RII are the cameras it would be mounted on.
8mm/2.8?
7.5mm/5.6?
8mm/8?
10.5mmDX (Shaved?)
non-Nikkor?
Thanks - John
8/2.8 is big and heavy. The 7.5/5.6 & 8/8 mm are lightweight, but fix-focus and not retrofocus designs, so they are not well suited for digital cameras. The 10.5 (shaved) is sharp inside its designated field of view and not equally well so outside it, plus you won't get a full circle.
I'd suggest a Samyang, Sigma or similar 8/3.5 circular fisheye lens.
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The 10 OP Fisheye-Nikkor is a nice lens, but of course not among the more common alternatives ... It orthographic rendering is more flattering to most subject than the usual fisheyes.
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amazing how you guys find creative uses for this.
It helps when you're surrounded by photogs whom understand what you're planning to capture, link that to the capabilities of the used lens (what is in the frame and such) and have the playful mindset to play along ;D
With fisheye lenses almost everything in front of the lens is in the frame and getting really close is the name of the game, photogs know this and play along accordingly. Got a girl upset once whom asked me to photograph her sitting in a stand at a fair, I was so close with a 16/3.5 she thought I was "zooming" in on her chest, only when I showed her the image contained the entire stand she realised I was not the pervert she thought I was ;D ;D
Here's the Bear playing along, or maybe not ;)
(https://c2.staticflickr.com/6/5208/5352992246_067ebf58d7_o.jpg)
D3s with a borrowed 8/2.8, Norway 2010
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The Sigma 4.5 mm f/2.8 can be used on DX or FX cameras, but for FX using a high MPix model is preferable.
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Again, 10 OP on a D800. Nikon claims the combination is 'impossible' but the camera does not know and the photographer might not care.
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Bjørn, your astronomy domain needs some explanation :)
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Why? It is just an ordinary picture. Interpret it as you like.
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A circular fisheye shot of a special circular fish eye lens
(https://c1.staticflickr.com/5/4056/4601109978_232fb95d26_o.jpg)
D3s with Nikkor 8/2.8 and built-in green filter, Norway 2010
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With a fisheye. you never walk alone.
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I just checked out the 10mm OPs currently for sale - I had no idea they were that dear . . . . but I want one. :)
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Slightly related to this topic, but I am sure some of you can give me advice.
I need an 8 mm fisheye lens for taking hemispherical pictures for determining leaf area index in a beech forest. I would like to use it on a Nikon full frame camera. What are my options (including other brands, e.g. Sigma), and what would be the best?
Just to add: I need 180 degrees field of view, not necessarily 8 mm.
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This is one of the chief applications for which Nikon developed the 10 OP.
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Will it work on a modern camera e.g. D810?
But not really an option because it is way too expensive: Grays of Westminster has one MINT- for GBP 30.000 !
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A few more examples of captures by the 8 mm f/2.8 Nikkor. My sample is a very early non-AI, later AI-converted using the AI kit for the 6 mm f/2.8 !! I got the massive fisheye lens for next to nothing*, in pristine condition for $175, so why not make it more useful for modern cameras? The AI-kit and then a CPU and the 8 mm is ready to impress its presence on the ambient world.
* Another of those strange tales of life when progress of life itself is non-linear. In this case the Nikon dealer found on a stock inventory update the lens hidden on a shelf overlooked by them 30 years, in fact standing there since I ordered it in 1975 but couldn't have it delivered because it was allegedly "out of stock". So they called me some years ago and asked politely if I still was interested. I asked about the lens coupling and they told me it was pre-AI, to which I answered I would only take it off their hands for "a reasonable price". That offer panned out as $175. Add $25 for the AI kit and I was in business.
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Will it work on a modern camera e.g. D810?
Yes, it most assuredly will. Nikon of course claims it is "impossible". I have taken hundreds of photos with my 7.5/5.6 and 10OP fisheyes on cameras that Nikon consider not possible.
First is 10 OP with my Df, second is 7.5 mm with my D800. Do note that at "wide" open setting f/5.6, it is entirely possible to have the foreground less sharp if you move in too close. The 10 OP is a fix focus lens and I think the lens is set to 1 m focus or so. Perhaps I should shim its mount a little to make it better for the near range.
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By the way, 7.5 fisheyes turn up quite frequently at much lower prices. I paid $200 for my sample that came in a special glass bubble to allow it to mount on a Nikonos camera.
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Another with the 7.5 mm f/5.6 Fisheye-Nikkor, this time on a Nikon D3X.
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My sample is a very early non-AI, later AI-converted using the AI kit for the 6 mm f/2.8 !!
The 6mm 1:2.8 and 8mm 1:2.8 in fact share the same AI kits: nos 56, 57 and 58.
Why three kits? Lenses with extremely short focal lengths require very short movements to focus, even the slightest variation in the height of the lens mount would throw infinity focus way off. So shims are used to adjust the height so each lens focuses correctly. Nikon made different height AI kits to match, although in practice you can pretty well use any kit, only in very rare cases does the combination of lens and kit result in the AI ring being too long or short to engage the camera correctly.
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They certainly pay attention to detail ;)
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Slightly related to this topic, but I am sure some of you can give me advice.
I need an 8 mm fisheye lens for taking hemispherical pictures for determining leaf area index in a beech forest. I would like to use it on a Nikon full frame camera. What are my options (including other brands, e.g. Sigma), and what would be the best?
Just to add: I need 180 degrees field of view, not necessarily 8 mm.
If you are looking for a circular fisheye for the FX format, Sigma 8mm/f3.5 would be the only candidate for the realistic price. It is of the equisolid angle projection type.
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If you are looking for a circular fisheye for the FX format, Sigma 8mm/f3.5 would be the only candidate for the realistic price. It is of the equisolid angle projection type.
Thanks, that seems to be a quite affordable option.
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Well, I couldn't resist. Paid around $333 for a basically brand new Sigma, it had been bought for a project that had then been cancelled and therefore only been used very few times. Unsurprisingly it looks completely new. No doubt it's going to take some time to learn to use it.
My first shot with it:
(https://farm2.staticflickr.com/1520/25261384373_39c62c3b26_b.jpg) (https://flic.kr/p/EugctT)
Untitled (https://flic.kr/p/EugctT) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
Shot a few quick snaps with it since then, here's one:
(https://farm2.staticflickr.com/1578/25589540150_c14c39d4ea_b.jpg) (https://flic.kr/p/EZg5L7)
Untitled (https://flic.kr/p/EZg5L7) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
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Jørgen, keep on snapping and show us the results. The first one look promising :)
It does need getting used to 8)
As Bjørn would say: "Get in closer!"
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For reference, a second-hand shop in Shunjuku, Tokyo offers Ais 8mm/f2.8 fisheye in "A" (the best) condition for 334,800 JPY.
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Hm. My $175 + 25 AI-kit ($200 total) for a straight-out-of-the-box 8/2.8 pre-AI seems better and better.
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Going full circle.
(https://farm2.staticflickr.com/1702/25284091583_b79a3bcca2_b.jpg) (https://flic.kr/p/Ewgzxv)
360 degrees (https://flic.kr/p/Ewgzxv) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
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Jørgen, apparently the lens works great. I like the clear separation between the border of the circular image and the surrounding black area.
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Going full circle.
Looks great! Which Sigma is this?
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Jørgen, apparently the lens works great. I like the clear separation between the border of the circular image and the surrounding black area.
That's done in PP.
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Looks great! Which Sigma is this?
Sigma AF 8mm F3.5 EX DG.
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That's done in PP.
Okay, I heard that this is one of the most difficult aspect of a circular fisheye design.
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Okay, I heard that this is one of the most difficult aspect of a circular fisheye design.
Any opinions on the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye for APS-C sensors?
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Okay, I heard that this is one of the most difficult aspect of a circular fisheye design.
Here is an unprocessed shot, I simply loaded it in LR and exported it.
(https://farm2.staticflickr.com/1624/25925974375_1b91860c10_b.jpg) (https://flic.kr/p/FuZoWc)
Storetorv og Aarhus domkirke, m.m. (https://flic.kr/p/FuZoWc) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
Fortunately it's easy to fix in PP, otherwise I wouldn't have been able to do it ;D
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Any opinions on the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye for APS-C sensors?
It is "... tolerable I suppose, but not handsome enough to tempt me"
You need to use the 4.5 Sigma on a high-resolution camera since its image circle is smaller than the other fisheye lenses designed for FX.
It focuses very close, more or less to the front element itself, which can be useful, but also shows mercilessly any dust on the front. The image centre is sharp, towards the peripheral parts the rendition gets a little softer.
To the rear you can put a tiny gel filter, but this requires the filter to be cut to size.
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Here is an image taken with the Spiratone fish-eye lens 0.15x converter on a AF-Nikkor 50/1.4 D. Quite difficult to get a sharp image.
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It is "... tolerable I suppose, but not handsome enough to tempt me"
Anyway your picture is quite remarkable! The lens might be good on a D500.
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I have the D500 on order and eagerly await its arrival.
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Another with the Sigma 4.5 on a D3X. In this case, the wood anemones actually were onto the front element.
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Fisheye front attachments are rarely useful, as image quality suffers greatly. Nikea's example convincingly demonstrates this. However, a front fisheye in combination with a relay lens can be advantageous if the lens itself won't fit physically, or its image circle either is too small or too large for the camera format at hand.
This is the 10 OP Fisheye using a relay lens on my D2X to shrink the projected image circle. For my current fleet of FX cameras, the 10 OP can be attached directly so no relay is required.
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Any opinions on the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye for APS-C sensors?
I have never used this lens. But interestingly, according to Sigma's official website, its image circle is only 12.3mm. Considering that the shorter edge of APS-C is 15.6mm and that of m4/3 format is 13mm. So, it would utilize the pixels of m4/3 format more efficiently, but Sigma makes this lens only for Nikon F, Canon EF and Sigma SA mounts.
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I have used the 4.5 Sigma on my Panasonics GH-2 via an F-m43 adapter. As the Sigma is a "G" lens, you need an adapter that allows some control of the aperture setting.
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I have used the 4.5 Sigma on my Panasonics GH-2 via an F-m43 adapter. As the Sigma is a "G" lens, you need an adapter that allows some control of the aperture setting.
That adapter is easy to find. Did you confirm that the image circle fits right into the m4/3 format?
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On the m43, the image circle fits just perfectly inside the frame.
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On the m43, the image circle fits just perfectly inside the frame.
Thanks for the confirmation. I wonder why the image circle is that small for a lens dedicated to an APS-C format...
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I think the lens was directed towards the Canon 1.6x format.
If you really wish to constrain the image circle further and as a result, make the lens render the transition image-black void much more distinctly, one can always leave the inner detachable half of the lens cap in place. The circle projected is cut off sharply due to the immense depth of field. There is nothing left of the blue-fringed transitional zone so characteristic for fisheyes.
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The shaved Nikkor 10.5mm f/2.8 appear circular on FX, when you mount an empty filter ring, same principle.
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A learning experience for me. I shot this "from the hip" without looking through the viewfinder nor the live view. I thought I was close enough to my subject, but oh no, not even the correct ballpark yet. Distance from the skates was about 20 centimeters or 8 inches.
(The mods may delete this post if deemed inappropriate. The projected image isn't quite circular on FX). D3X + Samyang 8/3.5.
(https://farm2.staticflickr.com/1704/25297395274_75cf9ec701_o.jpg)
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The shaved Nikkor 10.5mm f/2.8 appear circular on FX, when you mount an empty filter ring, same principle.
Thanks for reminding me about this - of course one needs to have the shaved lens retrofitted with a filter thread then ... (I should know you did this already).
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So many great photos in this thread. Creativity at its best.
This thread is certainly contributing to my NAS. ::)
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I think the lens was directed towards the Canon 1.6x format.
If you really wish to constrain the image circle further and as a result, make the lens render the transition image-black void much more distinctly, one can always leave the inner detachable half of the lens cap in place. The circle projected is cut off sharply due to the immense depth of field. There is nothing left of the blue-fringed transitional zone so characteristic for fisheyes.
The shaved Nikkor 10.5mm f/2.8 appear circular on FX, when you mount an empty filter ring, same principle.
Bjørn and Erik, thanks for the tip.
Bjørn, the shorter edge of Canon APS-C is 14.9mm which is still too large for the 12.3mm image circle of Sigma 4.5mm fish. Perhaps they designed it with the now abandoned 4/3 in mind.
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A couple of relatively recent shots.
#1
(https://farm2.staticflickr.com/1532/25817669844_d3e55ff701_b.jpg) (https://flic.kr/p/FkqiLG)
Tree at Ringkøbing Fjord (https://flic.kr/p/FkqiLG) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
#2
(https://farm2.staticflickr.com/1530/26396542006_9c1c5b7bbf_b.jpg) (https://flic.kr/p/Gdzbid)
Ringkøbing Fjord (https://flic.kr/p/Gdzbid) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
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Hm. My $175 + 25 AI-kit ($200 total) for a straight-out-of-the-box 8/2.8 pre-AI seems better and better.
Indeed, a quick search on eBay reveals these now go for $1600 to $2000+. I can't help but think your site bears some responsibility for increasing the popularity of these by letting people know how well they work on modern DSLRs lol.
Anyway, I love all the pics here.
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Note to self: Check and clean a fisheye lens often:
(https://farm2.staticflickr.com/1595/26465624932_dd4c985071_b.jpg) (https://flic.kr/p/GjFff9)
Jernhatten, Djursland (https://flic.kr/p/GjFff9) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
I guess it could be fixed in PP, but I have no clue how to do that.
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A couple more shots from the previous days.
#1
(https://farm2.staticflickr.com/1552/26466335642_206789a50f_b.jpg) (https://flic.kr/p/GjJTvL)
Træer ved Jernhatten (https://flic.kr/p/GjJTvL) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
#2
(https://farm2.staticflickr.com/1587/26558675365_3c8e30bbb9_b.jpg) (https://flic.kr/p/GsU9TX)
Sletterhage Fyr (https://flic.kr/p/GsU9TX) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
#3
(https://farm2.staticflickr.com/1634/26285787190_6c7ca9ee8c_b.jpg) (https://flic.kr/p/G3MwKq)
Agri Bavnehøj (https://flic.kr/p/G3MwKq) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
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Jørgen, the last three you posted are very nice. The effect the trees create and the lonely lighthouse and the compass :)
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Three in a row ;) Super! I like them
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Agree with Jakov and Erik, great set. I like #2 best, a perfect scene for FE.
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I prefer using circular fish-eyes on DX bodies. 8)
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(https://c2.staticflickr.com/2/1626/26362901386_5241f04a60_o.jpg)
played a bit with my son's samyang 8/3.5 indeed no full circle on fx
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Thanks for the comments guys.
Jakov: Until a few days ago, I didn't have a DX body. I now have a d40x to be converted into and IR camera before long.
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Here is a shot of a tower on a hill close to Belgrade called Avala.
IR D200 + Sigma 8/3.5 fish-eye :)
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A circular spring ....
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Oh how I love my circular fish-eye in IR 8)
The same subject with so many possibilities of shooting and post processing. Loads of fun ;D
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Jakov, I like your sense of color.
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Hello. Really enjoying the site and have been following for a while. Thought I would throw my hat in the ring so to speak with a couple fish-eye images taken recently.
Df and Fisheye-Nikkor 8mm/2.8
George
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Hello. Really enjoying the site and have been following for a while. Thought I would throw my hat in the ring so to speak with a couple fish-eye images taken recently.
Df and Fisheye-Nikkor 8mm/2.8
George
Welcome to NG, quite a good start with these images. :)
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Very nice framing and post prosseing;)
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Jakov, I like your sense of color.
Thank you Akira!
Joost, some really dramatic black and white images, I like them!
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A couple more shots from the previous days.
#1
(https://farm2.staticflickr.com/1552/26466335642_206789a50f_b.jpg) (https://flic.kr/p/GjJTvL)
Træer ved Jernhatten (https://flic.kr/p/GjJTvL) by Joergen Ramskov (https://www.flickr.com/photos/jramskov/), on Flickr
Jørgen I went to your exif to find some information: D750 Lens Info - 8mm f3.5, I assume this is the Samyang/Rokinon 8mm, is that right?
Appears to be full circular fisheye on FX.
(https://c2.staticflickr.com/2/1626/26362901386_5241f04a60_o.jpg)
played a bit with my son's samyang 8/3.5 indeed no full circle on fx
But Fons' photo is not full circle on FX?
I am about to pull the trigger, so to speak, on Amazon to buy the Samyang 8mm, sight unseen, no chance to try it out, but it would defeat the purpose if it is not full circle!
I am using D800 and Df.
Help!
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Hi, FGAng.
The 8mm fisheye Jørgen uses is Sigma which is designed as a circular fisheye for FX (or full-frame).
On the other hand, Fons uses Samyang 8mm/f3.5 which is designed as a diagonal fisheye for DX (or APS-C). Its lens hood is removable. Fons uses the lens without the hood which yields a circular image without vignetting caused by the hood. However, its image circle is the same as the diagonal size of APS-C format which is roughly 28mm and larger than the shorter side of the FX frame (24mm). That's why Fons' image is cut by the FX frame.
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Jakov: Cool yellow shots! Particularly the strong/sharp yellow color in the first one.
George B: Welcome. Those are very nice introduction shots ;)
Jørgen I went to your exif to find some information: D750 Lens Info - 8mm f3.5, I assume this is the Samyang/Rokinon 8mm, is that right?
Appears to be full circular fisheye on FX.
But Fons' photo is not full circle on FX?
I am about to pull the trigger, so to speak, on Amazon to buy the Samyang 8mm, sight unseen, no chance to try it out, but it would defeat the purpose if it is not full circle!
I am using D800 and Df.
Help!
As Akira already wrote, it's the Sigma AF 8mm F3.5 EX DG I recently bought and I use it on a D750.
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Hi, FGAng.
The 8mm fisheye Jørgen uses is Sigma which is designed as a circular fisheye for FX (or full-frame).
On the other hand, Fons uses Samyang 8mm/f3.5 which is designed as a diagonal fisheye for DX (or APS-C). Its lens hood is removable. Fons uses the lens without the hood which yields a circular image without vignetting caused by the hood. However, its image circle is the same as the diagonal size of APS-C format which is roughly 28mm and larger than the shorter side of the FX frame (24mm). That's why Fons' image is cut by the FX frame.
OK I understand now. If we take the ideal DX (18 x 24) being half of FX (24 x 36) the DX diagonal would be 30mm. So as a diagonal fisheye for DX the image circle would have to be around 30mm > 24mm so I won't get a nice circle.
Maybe this is a silly question, hopefully not, but 8mm being 8mm, the Sigma being designed as circular fisheye for FX, it follows that if I use the Samyang and in post process remove the "excess" image to form a nice circle, I should have the same image captured by the Sigma had it been used instead. Is this correct? I realize this is a long unwieldy sentence...
As Akira already wrote, it's the Sigma AF 8mm F3.5 EX DG I recently bought and I use it on a D750.
Oh silly me, it was you who initiated the thread with that to-buy-or-not-to-buy question.
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The answer to that long and unwieldy sentence is 'it depends'. Actually, depends on the exact projection equation used in the optical design.
Ignoring any near range differences, an 8 mm lens on-axis will yield the same magnification of detail, but not necessarily the same field of view. Looking at this in reverse, the same field of coverage might be produced by lenses with different focal lengths. For example, my 8 mm f/2.8 and 10 mm f/5.6 fisheye-nikkors both cover 180 degrees, but the manner in which this coverage is manifested will be different. See the examples below.
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Samyang makes fisheyes for three different formats (FX, DX and m4/3). What makes Samyang (also sold under some different brand names like Bower) unique is that all three fisheyes are of stereographic projection type. Given the format size is the same, the focal length of a stereographic projection fisheye is the shortest, and thus its magnification factor of the central area is the lowest.
On the other hand, the peripheral parts of the image by a stereographic projection fisheye is much less squeezed than the ones by the fisheyes of all other projection types, and thus the resulted entire image is the most natural.
I personally prefer the images by Samyang fisheye and used as a super-wide angles, although Samyang doesn't make any circular fisheye.
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So my unwieldy question is neither stupid nor irrelevant, projection methods and the like, while I understand the explanation qualitatively, quantitatively I have too little understanding of optical physics to completely make sense of it without digging into mathematics of some college text books I would rather not. Another unwieldy sentence... I do apologize.
I have a Tokina DX 10-17mm fisheye zoom, which is a diagonal fish eye lens, that I used both in DX and FX (from 15mm onward, effectively making it a 16mm f/4.5 FE).
And Akira-san (I assume) said that Samyang does not make a circular fish eye lens, and I am fundamentally not interested in a diagonal fish eye lens, the simpler question might be what are my options for FX? For a lens that will not see too much action, I rather not pay the Sigma's asking price. Opteka 6.5mm?
And I suppose the other option is to use the Samyang 8mm and PP the circle to it...
I am not partial to using a DX lens and push it to FX service, as I have done with the Tokina 10-17 DX FE with a loaner D700 and my D800 and Df.
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Well, I paid less than half of the asking price for my copy and it basically new. It had only been used a few times when I bought it.
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So my unwieldy question is neither stupid nor irrelevant, projection methods and the like, while I understand the explanation qualitatively, quantitatively I have too little understanding of optical physics to completely make sense of it without digging into mathematics of some college text books I would rather not. Another unwieldy sentence... I do apologize.
I have a Tokina DX 10-17mm fisheye zoom, which is a diagonal fish eye lens, that I used both in DX and FX (from 15mm onward, effectively making it a 16mm f/4.5 FE).
And Akira-san (I assume) said that Samyang does not make a circular fish eye lens, and I am fundamentally not interested in a diagonal fish eye lens, the simpler question might be what are my options for FX? For a lens that will not see too much action, I rather not pay the Sigma's asking price. Opteka 6.5mm?
And I suppose the other option is to use the Samyang 8mm and PP the circle to it...
I am not partial to using a DX lens and push it to FX service, as I have done with the Tokina 10-17 DX FE with a loaner D700 and my D800 and Df.
Apparently Opteka 6.5mm is a diagonal fisheye (a circular fisheye shouldn't have a lens hood). I would even go so far as to assume that Opteka 6.5 is actually Samyang 8mm?!
Your assumption is right. I'm Japanese and "-san" is a Japanese honorific. But you don't need it here. :) Welcome to NG!
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Apparently Opteka 6.5mm is a diagonal fisheye (a circular fisheye shouldn't have a lens hood). I would even go so far as to assume that Opteka 6.5 is actually Samyang 8mm?!
You may want to compare the images of the lenses in question here:
http://opteka.com/opt65ii.aspx
and here:
http://www.photozone.de/canon-eos/526-samyang8f35eos
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Nikon D800E ,Nikkor 8mm f/2.8 Fisheye Ai-S
f/8.0 at 8.0mm iso200
(https://nikongear.net/revival/proxy.php?request=http%3A%2F%2Fwww.pbase.com%2Fbobfriedman%2Fimage%2F156918417%2Foriginal.jpg&hash=df2a79d4d2db7cc45253c9bcb57ce2c821953619)
Nikon D810 ,Nikkor 8mm f/2.8 Fisheye Ai-S
1/250s f/8.0 at 8.0mm iso200
(https://nikongear.net/revival/proxy.php?request=http%3A%2F%2Fwww.pbase.com%2Fbobfriedman%2Fimage%2F160700479%2Foriginal.jpg&hash=f8851fa80aee2a2b091877acdd8047a6c9f122cb)
Nikon D810 ,Nikkor 8mm f/2.8 Fisheye Ai-S
1/2000s f/5.6 at 8.0mm iso640
(https://nikongear.net/revival/proxy.php?request=http%3A%2F%2Fwww.pbase.com%2Fbobfriedman%2Fimage%2F161340949%2Foriginal.jpg&hash=842bc16ffa7d8e76e7899adbc6f23a51b8d7c1ae)
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That happy hippie guy really suited the fish treatment :D
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That happy hippie guy really suited the fish treatment :D
believe it or not, he is an art teacher at one of the local high schools.
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OK, this is probably not good enough photographically, but I just wanted to try. Do bear with me. Mundane subject in my room.
Tokina 10-17mm FE zoom, at 10mm, on Df. PP in PS, cut out the circle part of the image in the middle; the original is a bar inserted into a circle, if you know what I mean, with black borders.
(https://nikongear.net/revival/proxy.php?request=http%3A%2F%2Fgallery.clubsnap.com%2Fdata%2F500%2FDSC_8840_circular_FEs.jpg&hash=051af7f4d62dddc74d1b9179a3c5069eed193d91)
Poor man's circular fisheye?
Again it is probably a projection issue, where 10mm Tokina / 10.5mm Nikon / 8mm Samyang/Bower/Rokinon / 6.5mm Opteka all give 180 degrees on DX. So can I use 10mm Tokina and get this circular FE through PP?
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No.
Hmmmm, seems like it would be good idea to learn about projection by looking at some images and illustration or this will keep on going in circles,,, ;D ::)
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Here's the link to the Wikipedia about the fisheye lenses of various projection type:
https://en.wikipedia.org/wiki/Fisheye_lens
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Thanks for providing the link!
Here is a shot also posted in another thread, Nikkor Fisheye 6mm f/2.8,,, Circular Fisheye on full frame FX (D810), 390 deg and 220 deg field of view,,,
(https://farm2.staticflickr.com/1462/25970772974_2d5080783d_h.jpg) (https://flic.kr/p/FyWZZQ)_EGL1888 (https://flic.kr/p/FyWZZQ) by Erik Gunst Lund (https://www.flickr.com/photos/erik_lund/), on Flickr
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I have the PELENG 3.5/8mm sitting aroun, guess I should give it a spin ;-)
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Just take care of your mirror, the Pelang dosn't clear in all cameras,,,
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Thanks for providing the link!
Here is a shot also posted in another thread, Nikkor Fisheye 6mm f/2.8,,, Circular Fisheye on full frame FX (D810), 390 deg and 220 deg field of view,,,
Wow! I just did a copy-cat downstairs, and 180 is not 220 deg... Salute!
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I hope I'm not too late to the game.
Shot this awhile ago with F5 and Kodachrome and these all are with the Fisheye-Nikkor 8mm f/2.8 (the low budget fish)...
Stonehenge, cathedral in France, and a bridge in Germany. (Normal view tossed in for comparison).
Dan
P.S. So pleased to see Bjørn Rørslett alive and well herein!
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Unfortunately, this was shot in the film era on Kodachrome, thus only a poor scan exists.
F2, Fisheye-Nikkor 10 m mf/5.6 OP, remote control. I was lucky to catch the echo of the three gulls in the ghost spot.
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Nikon D800E ,Nikkor 8mm f/2.8 Fisheye Ai-S
f/8.0 at 8.0mm iso200
(https://nikongear.net/revival/proxy.php?request=http%3A%2F%2Fwww.pbase.com%2Fbobfriedman%2Fimage%2F156918417%2Foriginal.jpg&hash=df2a79d4d2db7cc45253c9bcb57ce2c821953619)
Bob, you had the wrong camera, this one should have been one of those marvelous infrareds of yours! (of course with an IR "full frame" camera...)
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Bob, you had the wrong camera, this one should have been one of those marvelous infrareds of yours! (of course with an IR "full frame" camera...)
I wish i had a full frame IR cam... been thinking of converting a D800 if i find one at the "right" price.. thx.
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A first simi-budget attempt with a fisheye converter.
While I managed to keep my head and feet out of the way I caught my shadow unaware.
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This one always gives me a smile. Nikon FA, Sigma 8mm f/4, Tri-X, exposure unrecorded.
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Some great shots guys!!
Bob, those are amazing, especially that shot of the tree branch over the pond!!
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I think it is interesting to see so many wonderful and before all meaningful uses of fish-eye lenses. They are in fact not just gimmicks. :)
(https://nikongear.net/revival/proxy.php?request=http%3A%2F%2Fbogt.dk%2Ffiler%2Fstairwell.jpg&hash=39bbbcbdc611d7d57a41ffe947dc40930c04ed52)
This is the stairwell of our company domicile, shot with a 5DmkII (I use predominantly Canon at work and Nikon at home) and a Sigma 8mm.
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The Daphne Schippersbrug in Utrecht
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An oldie, during the NG Photokina meetup in September 2016
D810 + AF-S 10.5/2.8 (shaved by Dr. Lens :) )
Stitch of one portrait and one landscape image.
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Sunflowerssssss 8)
Lovely images on display in this thread, I am thoroughly enjoying it!
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Sunflowerssssss 8)
Lovely images on display in this thread, I am thoroughly enjoying it!
+1 !
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Perfect Chris! Wonderful workshop ;)