Author Topic: Nikkor 10.5mm f/2.8 - 62mm filter threads modified  (Read 4465 times)

Erik Lund

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Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« on: March 05, 2016, 11:01:55 »
I am starting to prepare for the Scotland NikonGear Workshop and in this connection I wanted to work on Nikkor 10.5mm f/2.8 adding 62mm filter threads, to give the possibility to make the usual FX hack more flexible and the added benefit of using a standard 62mm lens cap.

Now it is the usual 'almost' circular fisheye after the 'hack' cutting off the petal lens hood ;)

By adding 62mm 'filter rings' the lens becomes a circular fisheye by cropping,,, naturally.

The donor was a Close up nr. 6T filter housing relieved from the glass and the male 62mm threads are used as a spacer inside to make the filter slide on to the lens and position, seat correctly.

A bit of Dremel work,,, and the filter ring slides into position solidly.


Erik Lund

Bjørn Rørslett

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #1 on: March 05, 2016, 11:10:08 »
An interesting twist. The "shaved" 10.5 mm has a front lens highly susceptible to knocks and bumps besides being a magnet for finger prints. I assume the filter "holder" can slide back and forth?

Erik Lund

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #2 on: March 05, 2016, 11:25:23 »
The filter threads are fixed on this modification so extension rings are needed, it is set not to vignette even at infinity.

It would be possible to make it slide for instance with a tight fit and felt ;)

Erik Lund

Bjørn Rørslett

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #3 on: March 05, 2016, 11:27:39 »
Aha, the K-ring set comes to the rescue - yet again ....

Frank Fremerey

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #4 on: March 05, 2016, 11:30:08 »
The D810 looks like new *ggg*

Great work!
You are out there. You and your camera. You can shoot or not shoot as you please. Discover the world, Your world. Show it to us. Or we might never see it.

Me: https://youpic.com/photographer/frankfremerey/

Erik Lund

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #5 on: March 05, 2016, 11:35:33 »
Thanks ;)

Yes 'K-Rings' but 62mm ones!
Erik Lund

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #6 on: March 05, 2016, 12:01:13 »
sorry - I overlooked that size is expanded from the usual 52 mm.

Akira

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #7 on: March 05, 2016, 12:53:01 »
Amazing job, as always, Erik!

So, you would need some stacked filter rings without the glasses to use a cap?
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

Erik Lund

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #8 on: March 05, 2016, 13:17:34 »
Thanks!

Yes, a couple of filter rings to avoid the lens cap touches the glass front!

Or now I use an old Nikon 62mm 'glass-less' CPL it has 72mm front filter threads :)

Especially for these Fisheye and ultra wides this I mandatory! Otherwise specs will show up in the images.

I'm in the final process of negotiating with Photografica.dk to rent their 6mm f/2.8 for the Scotland Workshop ;)

So I'm also looking into collecting all the bits and pieces for my off center tripod to balance it on, without the feet showing up in all the pictures,,, ;)

Erik Lund

Bjørn Rørslett

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #9 on: March 05, 2016, 13:56:24 »
Does that might Fish 6/2.8 come with its own truck and dedicated driver ??? :D

I have seen this massive lens three times now: Tokyo, London, and Copenhagen. Never taken a picture through it though. Yet.

Erik Lund

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #10 on: March 05, 2016, 14:37:25 »
It's 5 kg or 10 Lb so yes it's appropriate we have rented a big car ;)

I'm sure your up to the task of shooting it - I'm just facilitating that the lens will appear in the Scotish landscape ;)

For sure we need to do a star sky shot amongst many others!

Now I'll shoot away with the tiny 10.5mm to get re-accustomed to the unique Fisheye perspective ;)
Erik Lund

Erik Lund

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #11 on: March 05, 2016, 19:22:51 »
BTW; The original petal lens hood that is cut off can after the modification be refitted again whenever DX shooting is needed, the petal lens hood fits inside the 62mm filter threads or in a separate filter ring- Quite neat IMHO
Erik Lund

Erik Lund

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #12 on: March 05, 2016, 19:53:11 »
Here it is;

NIKKOR 10.5mm re use hood by Erik Gunst Lund, on Flickr

If mounted in a filter ring trimming of the ring is needed,,,
Erik Lund

Jakov Minić

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #13 on: March 05, 2016, 19:53:52 »
I can hardly wait to go fish-eyeing in Scotland!
Free your mind and your ass will follow. - George Clinton
Before I jump like monkey give me banana. - Fela Kuti
Confidence is what you have before you understand the problem. - Woody Allen

helioer

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Re: Nikkor 10.5mm f/2.8 - 62mm filter threads modified
« Reply #14 on: March 15, 2016, 10:27:14 »
Looks nice. I've been thinking about the shave as well for my 10.5, but now it is almost unnecessary since I've once again added more gear and now my "fishy" alternatives are
- Sigma 8/3.5 AF
- Samyang 8/3.5 MF
- Nikkor 10.5/2.8G
- Nikkor 16/2.8 AF D

MF works well with Fish...

I have my old signature still, but have to update that due to changes in my gear - probably need to remove the gear list as I tend to add more stuff instead of selling it...

New stuff
- the Samyang mentioned above
- Nikkor 24/1.4G - cheap second hand, no signs of wear
- D800 body - second hand and cheap - was looking for a used D3x and found it, but the same shop had the D800 a lot cheaper

Additionally some non-Nikon stuff
- Wacom Intuos Pro tablet (had to take the small version as it was the only size I could fit to my desk)
- Adobe Photoshop CC and Lightroom CC included with the Wacom deal
- old cameras I used to own but sold away - found dirt cheap ones - Canon FTb (bought one in 1970 - bought one now as a working sample with 50/1.8 lens for 70 euros), Canon A-1 (sold mine when bought my first Canon F-1n - paid only 5 euros for the "new sample", inserted a battery and it works), one Yashica 4x4 gray (found almost unused one at my wife's relatives - they know I love gear, so got it), one Kodak Brownie C (have used this type in the 60's), had my old F-1n cleaned + motor drive battery replaced (bought the camera + motor drive second hand in 1985 and used it as my main SLR until 2003 before switching to Nikon), bought a second F-1n as well a couple of weeks ago
- one Lytro Illum - cheap, second hand, remains to be seen will it be a display cabinet piece or something to be used. Funny issue though that the Lytro software is not comptible with my Nvidia Quadro
- writing this on my new iPad Air 2

Serious GAS/NAS but

I actually started my own company about one month ago. I can retire in two years and I needed a "hobby" for retirement time. I added all my interests to the business description so I'll get sales tax away from purchases like photo gear...
Erkki
D3s, D3, D200, D70, Nikkor 14-24/2.8G, 20/1.8G, 24-70/2.8G, 28/1.8G, 70-200/2.8G VR, 300/2.8G VR1, 200-400/4G VR2, 60/2.8D+105/2.8D micro, 85/1.4G, 16/2.8D, 50/1.4G, 500/8 C, 10.5/2.8, 18-70, 18-200, TC-14 E II, TC-17 E II, TC-20 E III SB800's SBR200's
Sigma 8/3.5 EX, 12-24 EX, 150/2.8 OS EX