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04-08-2014, 10:06 AM   #1
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Problem adapting M42 to K

Hi everybody!

Hope this is posted in the right place...

You'll see, I've got some trouble with my Pentax K30 and a Yashika 50 1,7(M42 mount). I bought an adapter, which allow infinity to focus and all that stuff. It seems that fix properly but, when I set the camera in Live View mode, this is what happens:

Video - TinyPic - Alojamiento de im

It starts to shake, sometimes it also happens when shooting. I don't know why...

Please anybody help me


04-08-2014, 10:14 AM   #2
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My best guess is that the lens is somehow shorting the contacts on the lens mount. Try putting some tape over them to test the theory.

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04-08-2014, 04:06 PM   #3
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is that the AF? Are you switched to MF?
04-09-2014, 04:34 AM   #4
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Hi anaptrson and welcome.
Maybe also try without SR being on for a start to see if there is an improvement then check the focal length setting for SR is set at 50mm. Could be set for a much longer focal length and is giving an exaggerated effect.

04-12-2014, 07:30 AM   #5
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QuoteOriginally posted by marcusBMG Quote
is that the AF? Are you switched to MF?
is there any af m42?
04-12-2014, 10:48 PM   #6
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As Hoodie states, check the Shake Reduction's focal length setting. I've had it happen that I set it wrong and it caused the same extreme shaking, but only when the SR is set to a VERY long (300+) focal length.

But, it can also be the contacts on the body, if anything is touching them. That's where the Camera gets the focal length of a lens when the lens has that info. (FA, DFA, and DA lenses do)
04-14-2014, 08:35 AM   #7
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Original Poster

Hi guys, that was it!

I turn the shake reduction off and problem solved!!

Thank you so much, I've been like a month trying to find a solution...

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