COntax to LTM Adapter, some samples

[lens_hacker]

Collimated for wide-open and close-up for the Leica, best to stop down a little for infinity. The Sonnar focus shift helps stretch that infinity focus.

Wide-open at F2:



TIGHT Crop of above.

[lens_hacker]

Nice addition for a small camera.

This one is set in a 1955 J-8 focus mount, the later 1980s Black mounts work just as well. The earlier mounts are double-helical.

[Wayne R. Scott]

So, will a post war Sonnar f1.5's elements fit into a J-3 ltm mount?

What happens when you use these adapted lens with a ltm to M adapter on a Leica M mount body?

Wayne

[Stephanie Brim]

This is great news! Now I may be able to finally sell the Kiev 4 and get a Canon P again!

...eventually. Maybe once my love affair with this Graphic View thingamajig cools a little.

[lens_hacker]

He Stephanie!

Have you posted any Baby Pictures lately??

Brian

[lens_hacker]

> So, will a post war Sonnar f1.5's elements fit into a J-3 ltm mount?

NO! The post war lenses will not work. The optics and fixtures were enlarged. The Zeiss Opton is much different construction, and the post-war Zeiss Jena's are larger diameter optics and threads.

The Pre-War and Wartime optics modules will work. The fixtures are Longer than the J-3, and the "prescription" of the glass is different. BUT- in the worst case, take off the variable stand-off ring of the J-3, polish it down, and use it on the Zeiss module to go into the Jupiter focussing mount.

The 5cm F2 requires that you use the J-8 aperture ring in place of the Zeiss ring. The 5cm F1.5 aperture ring can stay in place on the J-3 Mount. I've done 5 exchanges to date.

The J-8 Module WILL NOT go into the collapsible 5cm F2 mount, but an I-61 module fits after polishing down the aperture ring. The J-3 module fits into the Contax 5cm f1.5 mount, but you need to polish it down a bit. The J-3 mount is shorter.

Yup- That Canon P would look something like this...