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Forum: Pentax K-1 12-07-2018, 04:10 PM  
Helios 44-2 and K-1ii Mirror Clearance
Posted By clickclick
Replies: 14
Views: 696
I'll give you another "similar" report. I have no issues with my Carl Zeiss Jena Biotar 2/58 on my K-1. Since the Helios is based off the same optical formula, I'd think the basic positioning of the rear element would be the same to have it focus to infinity.
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