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Pentax PK bayonet 1.4/50mm alternatives: CHINON COSINA RICOH
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PostPosted: Wed Jul 17, 2013 7:48 pm    Post subject: Reply with quote

Thanks guys! Very Happy


PostPosted: Mon Jul 29, 2013 2:25 pm    Post subject: Reply with quote

Here's few from RICOH 1.4/50mm & NEX-C3 all wide-open, no sharpening:







PostPosted: Tue Aug 06, 2013 8:13 pm    Post subject: Reply with quote

As requested, here is the Vivitar 50mm f1.4.

I can confirm the following:
- Serial starts with 9.
- 49mm filter thread.
- Convex rear element.
- 8 upward aperture blades.
- Mount has 4 screws.
- Focusing grease is dry.



No samples yet.


PostPosted: Wed Aug 07, 2013 9:37 am    Post subject: Reply with quote

Thanks Mike. Nice Cosina clone there. Looking forward for samples!

The above photos from my Rikenon were badly processed. Please check Oversized in BW: http://forum.mflenses.com/ricoh-rikenon-1-4-50mm-pk-on-nex-c3-bw-wide-open-t61531.html