This is the first lens I've used that makes general-purpose handheld video shooting a real possibility on a full-frame DSLR.
It's a test of Canon's new zoom, the 24-70mm f/4 IS. I shot this entirely handheld, something I would never have attempted with lesser glass. Also using June 15 build of Magic Lantern raw for 5dmkiii.
This lens is a game changer for me. Shooting raw handheld is an option now.