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

There are samples with a soapy left side (in full frame) even better on 5 it’s very, very good, given that there are almost no alternatives. Has some pros: Dust and moisture protection, USM, 77mm is noticeably cheaper to buy filters than its older brother. Got cons: on a full frame at 17 mm, the edges are still not very tolerable, but there isn’t much, unless you demand from him what he was not created for - that is, a large aperture, and an extended focal length.