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05-27-2011, 09:00 AM   #1
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HELP! M42 Adapter won't come off, lol.

I guess I made mistake of screwing on the M42 adapter to the lens first. Then I tried to put it on the body and it won't lock into the camera. Now I am trying to take the adapter off and I can't seem to unscrew it--sooo tight.

Facing the rear of the lens, which way do I unscrew the adapter? clockwise or counter-clockwise? Don't know how I am gonna get this off.. might have to use channel locks--with some fabric inbetween.

05-27-2011, 09:06 AM   #2
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Which adapter is it? Is it the Pentax or a third party one?
05-27-2011, 09:08 AM   #3
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QuoteOriginally posted by geekette Quote
I guess I made mistake of screwing on the M42 adapter to the lens first. Then I tried to put it on the body and it won't lock into the camera. Now I am trying to take the adapter off and I can't seem to unscrew it--sooo tight.

Facing the rear of the lens, which way do I unscrew the adapter? clockwise or counter-clockwise? Don't know how I am gonna get this off.. might have to use channel locks--with some fabric inbetween.
Lefty loosey, righty tighty. if you have the lens with the front end pointing down, I believe you will want to turn the adaptor counter-clockwise.
05-27-2011, 09:08 AM   #4
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QuoteOriginally posted by joe.penn Quote
Which adapter is it? Is it the Pentax or a third party one?
It's the authentic one. Asahi Pentax, Made in Japan.

05-27-2011, 09:24 AM   #5
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Use a small screwdriver to depress the spring away from the camera body,use the screwdriver to help it start turning counterclockwise.
Jake
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05-27-2011, 09:28 AM   #6
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QuoteOriginally posted by bjake Quote
Use a small screwdriver to depress the spring away from the camera body,use the screwdriver to help it start turning counterclockwise.
Jake
Attachment 92737
It's already off the body, and this f'er won't come off.. it's locked on so tight..wth
05-27-2011, 09:29 AM   #7
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I took that freaking spring off after the first time I had trouble releasing it.

But I think the OP is trying to get it off the lens, not the body.
05-27-2011, 09:30 AM   #8
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The stupid K2 manual says to put the adapter on the lens first then bayonet it in.. I did exactly that but it WILL NOT lock into the body.

05-27-2011, 09:33 AM   #9
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Could it be possible the aperture pin is interfering? Keeping it from locking in?
05-27-2011, 09:37 AM   #10
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Ok managed to lock it into the body and unscrewed it. The pin on the side of the adapter wasn't sticking out far enough to lock in.. I bent it out and it locked in this time.
05-27-2011, 09:45 AM   #11
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If you find yourself in the same pickle again, try using a rear lens cap from a K-series lens to increase the torque. Much easier than peeling off your fingerprints
05-27-2011, 09:50 AM   #12
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QuoteOriginally posted by geekette Quote
Ok managed to lock it into the body and unscrewed it. The pin on the side of the adapter wasn't sticking out far enough to lock in.. I bent it out and it locked in this time.
Huh.. I would leave the adapter on my Helios (with LocTite!) if it would mount on the camera with the aperture pin protruding, but it won't. I have to put the adapter in the camer and then screw in the lens.
05-27-2011, 10:09 AM   #13
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I have a bellows with M42 and leave the adapter on all the time. It is a pain to screw the bellows onto the adapter! Also, the adapter does not seem to orient the bellows perfectly square to the camera, so I had to tighten the adapter on tighter. Also had to adjust the locking spring!

The adapter is on there now!

Wasn't that all nerve wracking?

Regards,
05-27-2011, 10:32 AM   #14
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QuoteOriginally posted by BigDave Quote
. . . the adapter does not seem to orient the bellows perfectly square to the camera . . .
Most of the generic bellows have recessed set-screws that allow the female part of the lens mount to be rotated for exact alignment.

Also note that those adapters without the wide flange can be adjusted with shims to set the lens orientation. The registration distance is dependent on the base of the lens seating against the camera face regardless of whether the adapter is fully seated or not.

A squishy, small diameter rubber band or o-ring under the adapter often allows considerable freedom in the radial lens position when mounted.

H2
05-27-2011, 10:42 AM   #15
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Thanks pacer. The problem was it would not turn enough! I had to really tighten it down. It is there for the duration now!

Thanks for the feed back though. If I ever get one that goes a bit too far then the O ring is certainly the preferred remedy.

Regards,
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