Video: Canon's Locking Mode Dial Mod for 5D Mark II

See what the $100 upgrade will get you.

For $100 Canon is offering 5D Mark II and 7D owners a chance to send their cameras in and have a locking mode dial installed. Technical Editor Philip Ryan takes a closer look at one of the very first 5D Mark II's to feature this upgraded dial and compares it to the locking mode dial on the Canon 60D: