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Comparison at 17mm with Canon TS-E 17mm f/4L
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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Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.
Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.
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- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
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