Nikkor 6mm 2.8 Ai

[RonVol]

This has been a great thread to follow, especially the images Erik has been uploading to flickr.
Thanks heaps for sharing the impressive results.
 
I'm wondering how the lens/relay system ended up performing for the video test?
Are there any examples that we can view?

[Erik Lund]

Thanks I had great fun shooting that big lens

Here is an still image with the relay
_EGL2384 by Erik Gunst Lund, on Flickr

Quite impressive performance I think

[RonVol]

Thanks I had great fun shooting that big lens
Here is an still image with the relay.
Quite impressive performance I think

Thanks Erik.
I'd missed that one on your flickr page.
Yes I agree, quite impressive............considering all the glass that the light has had to travel through, the image has remained quite sharp.
Please let us know when you upload any video footage.

[Erik Lund]

The video was posted in the Scotland thread

Here the video. Butt of Lewis - Nikkor Fisheye 6mm Nikon D810 16:9 Video - Lens relay 35mm 1.4 50mm 1.2 Ais

http://nikongear.net/revival/index.php/topic,3494.msg51627.html#msg51627

https://www.youtube.com/embed/ZLxgon9x9_Y

The end framing is directly into the sunset, giving an unique orange circular flare along the edge of the frame

[Erik Lund]

Here is a 100% crop from the still frame, very impressive IMHO

BTW the weather was challenging, rain and lots of wind,,,

[Bjørn Rørslett]

A side note: I spent quite some time trying to optimise the output from the relay system by combining various optical items and spacers. The final configuration worked very well for HD video at least, producing crisp and clear footage.

Inserting a field lens into the relay might have improved rendition further because the relay optics could be stopped down more, but vignetting is always an issue in these setups. A general notice is that the only stopping down should occur at the front lens, in this case the 6 mm f/2.8 Fisheye, not on any of the relay optics. I mention this because it is a counter-intuitive principle to what most people would select, but the recommendation has a most reliable source (Brian Caldwell).

[Erik Lund]

A huge thanks to Bjørn for assembling the relay and to Jan Ann for lending me his 50mm

The peak image quality was at f/5.6
By a huge margin!

The whole set up of the relay was very tricky, the tolerances to reach peak performance was super tight. I used quite some time as well fine tuning the optimal length of the k-rings to enable a margin to 'focus' the length of the relay.

[Jan Anne]

Here's Erik in action at the Butt of Lewis, always with one hand on the setup to prevent it from tipping over the cliff 


Canon 85/1.2 FD SSC on Sony a7S, wide open


Voigtlander 15/4.5 FE on Sony a7S

[Jan Anne]

And the big fish in action at the Stones of Callanish, Isle of Lewis.


Canon 85/1.2 FD SSC on a Sony a7S


Canon 100-400 IS MkII on Sony a7RII

[Bjørn Rørslett]

Finally got around not only to see, but actually use, this legendary lens. Still no CPU in it, though but the new owner has just to call

[Kim Pilegaard]

220 degrees 360 degrees makes for a huge difference indeed,,, That's why I build the vertical base

I have offered to sell the vertical base to come along with the 6mm, if he doesn't buy it I'll re-build it to fit the 10.5mm AF-D to be able to do two shot stitches of approximately 200 degrees for 360 degree circular images similar to the 6mm but filling the D810 frame quite a bit more, I have all ready started the thread some time ago,,,
And if he buys it I will do a similar but smaller rig, no need for the same heft since the 10.5mm is tiny!

It can actually just rest on the Zacuto finder frame and rotate on that

Erik,

Could you elaborate a little bit on how to use the 10.5mm AF-D for 360 degree circular images? (an example would be great!)

[Erik Lund]

Kim have a look in this thread:

http://nikongear.net/revival/index.php/topic,2948.new.html#new

Best to keep it out of the 6mm thread I think

[Kim Pilegaard]

Kim have a look in this thread:

http://nikongear.net/revival/index.php/topic,2948.new.html#new

Best to keep it out of the 6mm thread I think

Thanks - looks very interesting!

[Erik Lund]

Here another 'Product' from the Scotland Event and the 6mm Fisheye Nikkor - A meeting table.

I'm really impress by the carpenters work - including the tree like that.

_EGL5685 by Erik Gunst Lund, on Flickr

And here with glass top - I'm sure an anti-reflex coating would have done this justice,,, but expensive,,,

_EGL5686 by Erik Gunst Lund, on Flickr

[Bjørn Rørslett]

Fantastic ! is only word that comes to mind.

You could have built a formidable industry out of this lens, Erik. A pity it was passed on.