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Archive 2015 · Canon lens very stiff mount

  
 
Xavier Rival
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p.1 #1 · p.1 #1 · Canon lens very stiff mount


A friend of mine recently purchased a 50 f/1.4 new. Problem is the lens feel very stiff to mount. She did actually never mounted it on her camera as she would have to apply more pressure than she felt comfortable to. We tried it on one of my Canon bodies, and could mount it, although it is definitely stiff. Much more so than any lens I mounted (and I tried many, but not so many that were totally new).

Is it common with new lenses ?
I am wondering whether it is just within tolerances and will become less stiff later, or whether it is a manufacturing issue that should be taken care of right now. Any advice would be helpful. Thanks!



Mar 01, 2015 at 07:24 AM
lowa2
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p.1 #2 · p.1 #2 · Canon lens very stiff mount


Compare the mount to other lenses you have. See if there are any bent bits.


Mar 01, 2015 at 08:04 AM
Xavier Rival
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p.1 #3 · p.1 #3 · Canon lens very stiff mount


I did look at the mount from every angle, and also checked all the screws. I spotted no difference like a screw protruding more, a bent part, a thicker or thinner part: I checked all these, but remarked nothing.


Mar 01, 2015 at 10:02 AM
EB-1
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p.1 #4 · p.1 #4 · Canon lens very stiff mount


Try it on another camera and just return the lens if it's too tight on both.

EBH



Mar 01, 2015 at 10:05 AM
brimull
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p.1 #5 · p.1 #5 · Canon lens very stiff mount


The tolerances on the mounts (camera body and lens) vary slightly. I've had loose and tight.

I agree that if it's too tight for your taste, return it promptly.

Brian M.



Mar 01, 2015 at 12:43 PM
Xavier Rival
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p.1 #6 · p.1 #6 · Canon lens very stiff mount


Yeah, I know tolerances cannot be 100% tight, and some variation should be expected, but this really seems ways more than average to me. Thanks for the feedback!


Mar 01, 2015 at 12:52 PM
Gochugogi
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p.1 #7 · p.1 #7 · Canon lens very stiff mount


My EF-s 24 2.8 STM was really tight at first but loosened up after of few months swapping on and off. The camera mount seems the same--other lenses haven't changed--so I assume the lens mount metal is soft and wears in a bit. My old EF 17-55 2.8 IS was loose as a goose after 5 years...


Mar 01, 2015 at 01:26 PM
scalesusa
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p.1 #8 · p.1 #8 · Canon lens very stiff mount


Its possible to get a lens mount at one end of its tolerance and have a camera mount at the other end of its tolerance. The tolerances are extremely tight, it takes very little to make it loose or tight.


IMHO, tight is better than loose.



Mar 02, 2015 at 12:17 AM





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