Zeiss Planar 50 1.7 C/Y AE Modification for Nikon

[Jani73]

I found this nice lens with 30€. After some research in web I decided to order bayonet for it from Leitax.
Lens works now perfectly in my Nikon D200 and focus to infinity.


I removed metal part from aperture ring. I removed plastic carefully from the center part, where it's melted around hole.


Marking place for two new holes.


Two new, not so round holes.


Edit:Leitax bayonet which I ordered is designed for newer MM-lens and it works with it ok. But because my lens is Older AE-model, it required little modification.
Then I tested aperture ring and it felted little stif, so I carefully sand down bayonet and checked aperture rings "feel" few times. Removed about 0.15-0.2mm.


Decided to use simple method for aperture-mod. Shrink tube is only for noise dampening, because otherwise spring keeps little noise when rubbing against lens.




Glued with Bison Bisonite. It's strong and elastic, so it doesn't broke in little pieces.






http://www.leitax.com/Zeiss-Contax-lens-for-Nikon-cameras.html

Thank you for the_Suede from idea.

http://forum.mflenses.com/c-y-planar-50-disassembly-and-conversion-t12014.html[/img]

[patrickh]

Good job


patrickh

[Jani73]

Thanks.

I also edited first post to make clear that my lens was AE-model, that's why I had to sand it little bit. Bayonet is for newer MM-model.

[Attila]

To ruin a valuable lens with DIY conversion not a supported idea by me, better to stay with Nikon lenses on your camera they are excellent and if you want to play take a mirror less camera and don't need to ruin any lens any more.

[Jani73]

I didn't done any damage to the lens, it's completely reversible conversion.

I don't mind conversing these lenses, they are just human made with lathes and drills and they can also modified in lathes.