Oh Frank...

[rover]

...

Maybe you can find some donor elements from this seller's Canon 50s.

http://search.ebay.com/_W0QQgotopageZ1QQsassZexaktaphile1QQsorecordsperpageZ50QQsosortpropertyZ1

 

[Sonnar Brian]

That 50mm f1.5 is a tough one: it is a SOnnar copy in 51.6mm, the leica standard. The closest thing to it would be a Nikkor 5cm F1.5: RARE and VALUABLE!!!

The Jupiter-3 is a SOnnar copy, but 52.3mm. I am afraid that we need to find a Canon 50mm F1.5 with a destroyed front element. If anyone spots a Nikkor 5cm F2 Nikkor-H in RF mount, let me know. I have a near-mint front lens group for it. Just waiting for the right user to come along.

 

[rover]

Ok, I will refocus my efforts. I thought we were looking for a Canon 50/1.8.

 

[FrankS]

I am looking for a Canon 50mm f1.5, and Brian is looking for a RF mount 50mm Nikkor-H f2. Thanks for keeping an eye out for me, Ralph!

 

[rover]

Nikkor-H f2

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=30039&item=3862108898&rd=1