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

Good wide angle at full frame. despite the fact that at 40mm it "washes" the background occasionally a tiny bit (when shooting close). An outstanding worker on the crop overall. I have several photographs taken by him in my album; those who are interested should take a look (although there are a lot of photos from the car window) Following are some advantages: Excellent level of detail, even at the f4 setting; at f12, I usually keep quiet. Unbelievably quick Universal Self-Masking (USM) autofocus motor; focuses quicker than the human eye) The moisture protection truly does work; in Thailand, I got caught in the downpour when we were canoeing, and the images I took turned out perfectly great (although I was a little afraid for 5d mark 3) Weight: little under 500 grams A variety of drawbacks: Yeah, what possible drawbacks are there with the eL series? If you try anything and it does not work for you, there is another lens available at a different price.