michelen's reviews

Canon EF 17-40mm f/4L USM

This is a good focal length for landscapes, scenery, and architecture. In fact, I use this lens more than any other. The image quality and contrast is good. It can be a little soft near the edges wide open and I have experienced on occasion chromatic aberration, green to blue shift, in areas of high contrast.

The lens is well constructed and the AF is generally fast and accurate. Given the cost of other comparable L lens, this lens is a good value.