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I sold my CV 21mm f/1.8 and bought a chrome 21mm f/3.4 super angulon for about $700 today. Much smaller lens that focuses a bit closer. It's got some moderate haze in it but i'm pretty confident in my ability to take it apart and clean it. Before I do, though, I was wondering if anyone has done this and if it's similar to the older f/4 version or the 35mm f/3.5 Summaron-M, both of which I have successfully taken apart and cleaned in the past. 

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  • 3 weeks later...

The rear group will screw out, revealing a spanner nut which secures the front group.

 

Schneideritis is failing cement between the elements, it won't clean out. If limited, sharpness isn't affected but contrast will diminish a bit.

Edited by JSU
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