Canon EF 20-35mm f/3.5-4.5 USM review by sjp010

This is a very useful lens wide angle lens for a full frame camera if you're on a budget or need to pack light. If you're looking for ultimate image quality, click elsewhere. If you want a cheap 20mm lens that is reasonably well built and gives good image quality at f/5.6 or f/8, this may be what...

Small; light; inexpensive; fast silent ring USM; good build quality

contrast a little weak wide open; hood is huge and probably useless

Canon EF 20-35mm f/3.5-4.5 USM - Review / Test Report

The optical construction is made of 12 elements in 11 groups without any special elements. Its aperture mechanism features just 5 aperture blades so a pleasing bokeh was probably not on the design priority list nor is it really needed for the majority of applications of such a lens.

Canon EF 20-35mm f/3.5-4.5 USM Lens Review

Canon EF 20-35mm f/3.5-4.5 USM, released back in mind 1993, replaced Canon's EF 20-35mm f/2.8L USM as a consumer-grade variant (the original 20-35mm f/2.8L USM was in turn discontinued in favor of EF 17-35mm f/2.8L USM).