Review on Ultra Wide Angle Zoom Lens for SLR Cameras - Canon EF 17-40mm f/4L USM by Chia-pin Lin ᠌

Excellent wide angle at full frame. although at 40mm it sometimes “washes” the background a little (when shooting close). On the crop, an excellent staffer. I have photos in my album from him - for those who are interested, look (although there are a lot of photos from the car window) Pros below: High detail, even at F4. at f12, I generally keep quiet. Incredibly fast USM autofocus motor - focuses faster than the eye) moisture protection really works - in Thailand I got caught in the rain while we were canoeing - I took pictures and everything is fine (although I was a little afraid for 5d mark 3) Weight - only 500 grams Different cons: Yes, what disadvantages can the eL series have? if something does not suit you, there is another lens in the line and for a different price!