This lens was DOA. It really needs to be around 749$ for me to ditch my 24-105L.
This lens is badly overpriced for what it brings to the table. I think Canon is going to be forced to dramatically drop the price in order to sell these things.
Bodies: 5D3, 6D, EOS-M
EF Lenses: 35mm f/2.0 IS, 100mm f/2.8L IS Macro, 135mm f/2.0L, 16-35mm f/4L IS, 24-70mm f/2.8L II, 70-200mm f/2.8L IS II; EF-M Lenses: 22 f/2, 18-55; ST-E3-RT, 600EX-RT (x3)