Focus Bottom Left?

[russellsnr]

Hi, Used ML for this in live view but cannot seem to get the focus box to the edge of the frame on the rear view finder (see image bottom Left) any help please?
Canon 6D.
Many Thanks
Russ

[a1ex]

On 5D3, in MF, the focus box is allowed to go as far as possible, but when switching to AF, Canon firmware makes sure it stays a bit away from the edge.

Therefore, even if you use plain Canon firmware, I bet you'll run into the same limitation.