The Canon 60D was the first Canon camera to add the new Dial Lock feature. Â This requires you to push down a button before moving the dial wheel and prevents accidentally changing the mode on your camera. Â If you want to add this feature to your existing 5D MkII or 7D, Canon is offering the upgrade for a $100 fee.
Add Dial Lock from Canon’s 60D to your 5D MkII or 7D
