This page compares the EF 17-40mm f/4L to the 16-35mm f/2.8L II at 17mm, using the Canon TS-E 17mm f/4L as a reference lens, previously reviewed here. All conclusions are based on viewing images as 16-bit TIF in Photoshop, processed from RAW.
- The 17-40mm f/4L was a brand-new lens, supplied for testing by our trusted vendor B&H Photo.
- The 16-35mm f/2.8L II was my own existing lens, one I know to represent about as good as one can expect, based on multiple prior samples of the original 16-35mm f/2.8L. Still it’s not so great, as this comparison shows.
- The TS-E 17mm f/4L was rented from LensRentals.com. It is definitely better than the brand-new 17/4L that I originally reviewed in late 2009. While it shows some asymmetric sharpness indicative of an optical or mechanical misalignment, it’s definitely superior to the brand-new copy I first reviewed.
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