Covering both full-frame and APS-C sensors, the EF 17-40mm has proved popular with photographers since its launch – and for good reason
Canon EF 17-40mm f/4.0 L USM Review
sample images
Verdict
Overall, Canon’s EF 17-40mm f/4 L USM is designed to match the needs of demanding professionals and, as such, does so with ease.
Details
Sample Photos: See sample images
Minimum Aperture:f/22
Lens Mount:Canon EF
Filter Thread:77mm
Focus Method:AF/M USM
Other:Lens hood: Ew-83E
Minimum Focus:28cm
Lens Construction:12/9, 3 Asph, Super UD
Weight:500g
Maximum Aperture:f/4
Diagonal Angle of View:104-57
Dimensions:83.5x96.8mm
Maximum Format Size:35mm
Focal Length:17-40mm