The EF 17-35mm f/2.8 USM L showed a very unusual vignetting characteristic. On an APS-C DSLR it can take advantage of a sweet spot behavior but at 17mm the lens already showed an optimal behavior with no measurable improvement when stopping down (yes, I repeated the test row to make sure). Due to the decreasing natural vignetting there's a
Coming to you from Gordon Laing, this excellent video review takes a look at the Canon RF 15-35mm f/2.8L IS USM lens.The 15-35mm f/2.8L comes with two Ultra-Low Dispersion elements for reduced
The RF 15-35 has dramatically less barrel distortion and lateral CA. The Canon RF 16mm F2.8 STM Lens vs. Canon RF 15-35mm F2.8 L IS USM Lens comparison shows the prime lens to be dramatically smaller and lighter than the zoom. Correspondingly, the RF 16 uses smaller filters (43mm vs. 82mm) and has a higher maximum magnification (0.26x vs. 0.21x).The Canon EF 20-35mm f/3.5-4.5 is a very lightweight full-frame ultrawide zoom for all Canon EOS digital and 35mm autofocus cameras. This 20-35mm has fantastic ergonomics. Nothing moves externally as it's zoomed or focused, and all the controls are exactly where they should be and feel great. This 20-35mm has instant manual focus override
All-in-all the lens is capable to beat the cheapo EF-S 18-55mm as well as the EF-S 17-85mm IS and regarding sharpness it can even rival the the EF 24-70mm f/2.8 USM L (on APS-C). If the focal length range was more attractive here the lens would have been a killer but as such it is just a good compromise.
canon ef 16 35mm f 2.8 l usm review
