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04-01-2015, 06:14 AM   #1
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Auto Chinon lens mount trimming

Jut bought an Auto Chinon 35-80 mm, f:3.5-4.9, in excellent condition, I'm planning to use it on my pentax K-5, but the lens mount needs some trimming, in order to fit properly. Any ideas, how to do it, so the optics, mechanics wont be damaged? I mean, if I use some kind of saw, maybe some metal particles might get into the lens body, obstructing the optics, mechanics, etc. so, if I'd have a better option, I'd avoid the previously mentioned one.

04-01-2015, 06:21 AM   #2
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Take the mount off.
04-01-2015, 09:00 AM   #3
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Can you post an image of the lens and mount ? I do not understand what you need to "trim" ... the aperture protection ... J
04-01-2015, 09:12 AM   #4
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Assuming it's the lens as shown on , you can probably take the mount of and remove the flange that protects the aperture lever after that.

Just a set of precision screw drivers (probably JIS, but small Phillips might do if the screws are not too tight).

04-02-2015, 12:19 AM   #5
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Thanks, will do!

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