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How to adjust shutters on Leica M3 - DIY

John Wayne , Sep 16, 2008; 07:54 p.m.

I hope these videos are of some use to people. I've tried to incorporate other peoples suggestions on how shoot these "how to" videos better, but I still don't have a camera man. Excuse the kiddy noise in the background and I meant to say a strong "LED" light source. Enjoy.

http://www.youtube.com/watch?v=QGzMrPNQHLM

Responses

Sam Oksner , Sep 16, 2008; 11:08 p.m.

These are great, simple and pretty common sense instructions. I have a question however. Wouldn't messing with the tension make the shutter speeds not accurate? If you could elaborate on that, it would be great!

Keep em coming, I've actually used the VF adjustment DIY for my friend's M6 and it worked great.

Jordan G. , Sep 17, 2008; 12:44 a.m.

I love these videos. Good job and thanks.

Jonathan Reynolds , Sep 17, 2008; 08:03 a.m.

Very useful indeed, Tristan. Thanks so much, and please don't stop.

Paul Neuthaler , Sep 17, 2008; 08:37 a.m.

Thanks, Tristan. Great.

John Wayne , Sep 17, 2008; 09:54 a.m.

Sam, the answer's yes, and you just opened up a large can of worms and also gave me an idea on a video. I think most Leica enthusiast believe their camera are super precision instrument, and they are, mechanically! However, shutters speed, that's another story. I'm a little old school, so I Iike using the TV trick (I hope you didn't throw out all your CRTs), since the higher speed more interest me. You can do the trick by eye, or on film. Remember, at 1/30 sec and slower you have the complete frame of the TV captured. Therefore, the TV test only works for higher speed above 1/60 sec. These are the simplest and best site for that info. http://rick_oleson.tripod.com/index-135.html http://people.rit.edu/andpph/text-calibrating-shutters.html

If you want more accuracy, you can build a shutter tester. Something, I've been meaning to do, like this one.

http://open.hr/~dpleic/photo/Shutter.html

Or, spend the money to by one. There's a guy on Ebay that sells a home made model. The principal's the same as the above site. P.S. I don't know the Ebay guy, but I'm sending business his way because of the prohibitive cost of a professional grade machine. Thanks...

John Shriver , Sep 17, 2008; 09:55 a.m.

The tensions don't go off, the springs are very stable. The bearing lubrication goes bad. The correct solution is a proper CLA, cleaning the bearings, and properly re-lubricating them. Then you recalibrate using the correct tensions.

John Wayne , Sep 17, 2008; 10:04 a.m.

Hey John, I'm wondering if all the expert guys really do that in a "full CLA" or "proper CLA." You're principal's sound, but do they really do that? Next time on the phone with Don Goldberg, I'll ask. Thanks

John Wayne , Sep 21, 2008; 07:29 p.m.

Build a shutter tester yourself.

http://photo.net/leica-rangefinders-forum/00QvQ5

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