1DX - very slight vertical play

Apr 26, 2014
5
0
#1
I've noticed my 70-200 is slightly loose on my 1DX. A little bit of rotational play, which I understand is normal. However there seems to be a very slight amount of vertical play. If I grab the lens hood and body and sort of tilt up and down between the two, you can see the play between the mounts (again, a small amount...) Also, just holding the 1DX and slightly shaking it around, it sounds loose. I'm test driving a 300mm 2.8 right now and notice it does the exact same thing. So, if there is an actual problem, I'm assuming it's the body. Does it sound like there's something wrong? Or is my OCD just kicking into hyper drive:eek:. Cheers!
 

neuroanatomist

Spends too much time on this forum
Jul 21, 2010
23,313
360
#2
Have you checked the tightness of the mount screws on the 70-200 (I've read reports of them loosening over time, although that hasn't happened with my 70-200/2.8L IS II). The combo with my 1D X has that slight rotational play, but nothing translational. As for shaking the combo, if you just shake the lens itself the IS group will actually move slightly, which results in a loose feel/sound.
 
Apr 26, 2014
5
0
#3
Forgot to add that in the OP. I have checked the screws both on the 70-200 and 1DX. All are tight. Regarding the shaking, it definitely not just the lens. It seems to be related to the mount. I think next week I'm going to text drive another 1DX to compare.
 

3kramd5

EOS 5D Mark IV
Mar 2, 2012
2,552
111
#5
Just a thought here, but if you’re pulling up on the lens hood, you’re putting a large moment on the mount (rXF, where you’ve maximized r on a fairly long lens). You might just be seeing the play in the bayonet mechanism.
 

Mt Spokane Photography

Spends too much time on this forum
Mar 25, 2011
14,480
63
#6
The mounts on the cameras do wear and even deform. If you have access to a dial indicator, you can check the runout, if you can even measure any, I'd have Canon check it, 1/10000 inch tolerances are involved. Canon had a patent come out a couple of years back to address the wear issue.
 
Likes: 3kramd5

3kramd5

EOS 5D Mark IV
Mar 2, 2012
2,552
111
#7
The mounts on the cameras do wear and even deform. If you have access to a dial indicator, you can check the runout, if you can even measure any, I'd have Canon check it, 1/10000 inch tolerances are involved. Canon had a patent come out a couple of years back to address the wear issue.
For this, flatness or profile would seem to be the concern, not runout.