A wide light-weight magnesium quick release adapter with double bubble levels, the Velbon QRA-635L is a great fit for most of today's digital SLR cameras. It features a "Camera Safe" slide mounting quick-release platform with "Auto Lock" retaining system, and comes supplied with the standard 35mm-sized plate, but can also be used with the bigger QB667 plate made for medium format cameras.
Customizable Anti-Twist Protection
Fold-up anti-twist registry pins with adjustable distance to camera screw
Ambidexterity
You can mount the plate into the quick release adapter in either direction