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Forum: Maintenance and Repair Articles 02-27-2018, 07:51 PM  
Industar-50 - how to access the diaphragm for cleaning and repair
Posted By timw4mail
Replies: 6
Views: 1,765
Nah, they save those for the camera bodies. They use regular hammers on the lenses :p.

More on topic, my copy has two silver washers that were between the helical and the lens assembly, do you think those are original, or perhaps a simple modification to allow for infinity focus with M42 adapter on an M39 lens?

From the structure of the lens, I wasn't able to get, how does the aperture ring turn?
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