This tripod foot smoothly goes on and off, and is fully compatable with the lock button on the lens. It's almost a perfect replacement...almost. The only area I would like to see this improved would be the location of the tripod thread. I use a Black Rapid strap that threads into the bottom of the plate. This plate moves that 1/4 inch thread very far forward and adjusts the balance noticeably. Still useable in this format, but not ideal.
