[fulldecent]

1/4" mount with no anti-rotate hole.

I have a 80D and there is a 1/4" mount at the bottom. But if you take a photo in portrait orientation with a long lens then the 1/4" bolt will not be strong enough and the camera will twist out of it. It's a joke!

[rrauenza]

I eventually went with an L bracket on my camera -- the bracket has Arca Swiss rails.

But now it's a little bigger and heavier :(