Probably the first thing you notice, is just how huge this bit of glass is. It weighs almost as much as my old 70-200 2.8L IS
Here it is compared to my other wide lenses (I'm an architectural photographer, so this is much more impressive than my long lens collections )
The front elements give a better feel for the bulk
The weather was a bit poor when it arrived, but I'm hoping to get out today for more testing.
I'll write up a more detailed review in due course, but at the moment I'm putting up samples and observations at: http://www.northlight-images.co.uk …/lenses/ef_11-24_f4l.html
There has been some concern over the use of gel filters at 11mm - I've an animated set of images on that page showing that it's probably just Canon being cautious...