Anyone had lenses fall off 5D MKII

A friend of mine tells me that he has had and has heard of lenses falling off the 5D MKII, anyone else had this problem?

If the lens is mounted correctly in the first place, it won't fall off.

Denny G wrote in post #8183608
If the lens is mounted correctly in the first place, it won't fall off.

Agree with Denny. A lens can come off any camera body if it isn't fully latched on. Otherwise, never heard of a problem re: the 5DMII. Mine is fine.

Could be someone was using an adapter of some-sort with an older style lens (or non-Canon lens) and had a problem.

Perhaps someone bumped the release accidentally, then the lens got twisted, so it fell off. Not hard for that to happen, and I rely upon the ease to depress the button and twist off the lens in one rapid motion with a single hand, for rapid lens changes.

Always listen for the click. Happened to me last year when I was working in the old with gloves with one of my Canons--thought I had turned the lens far enough, I hadn't and when I whipped it up to the eye and turned the camera for a vertical shot--boom! Fortunately I was standing on grass and the lens was not damaged.

Ive heard of some TC's not latching correctly and causing the lens to fall off. Did he happen to have a Tc?

Wilt wrote in post #8183753
Perhaps someone bumped the release accidentally, then the lens got twisted, so it fell off. Not hard for that to happen, and I rely upon the ease to depress the button and twist off the lens in one rapid motion with a single hand, for rapid lens changes.

But you do have to depress, hold it down, and twist, which does not happen with an accidental bump--thousands of sports and war photographers over the last 20 years have already proven this to be darned near perfectly foolproof. It's much more likely the lens was not completely locked when the lens was mounted.

I believe b4 the manual control firmware, ppl were doing the twist off lens trick to semi-control the expsore, and that be the problem you have been hearing.