Where is the DOF preview button? Please tell me it's lockable...
The DOF preview on the 5DII a terrible implementation that made it more or less useless.
this was asked a few pages back. Some have suggested that it may be the other side of the lens near the grip-similar to the 7D
The people suggesting that must not be familiar with the 7D.
The 7D has it on the same side as the flash button and lens release.
The 1DX however has various buttons on the other side.
Perhaps the 5DIII is similar.