On my adapter, I have removed the spring because it's a pain. The downside
of doing this is that the whole caboodle can detach itself if you're not
careful.
I did too... also to prevent the adapter from being a "body
adapter" as opposed to a "lens adapter." I didn't like the idea of
threading the M42 onto the body all the time and getting tiny steel
shavings on the sensor.
I ended up carving a small notch into the back of the lens for the
bayonet release to lock into. Then it all latches into place and I can
leave the adapter on the lens. Without doing that, you're always 1/4-turn
from the lens falling off on you like you mention.
-Cory
--
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* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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