Such high vignetting we haven’t seen so far in our tests. At 16 mm and by f/2.8 in the frame corners disappears 75% of light (−4.07 EV). On stopping down the aperture to f/4.0 the situation improves but still the vignetting remains very high, reaching 57% (−2.47 EV).Dedicated to the Canon EF 16-35mm f/2.8L III USM lens, the EW-88D Lens Hood helps to minimize flare by deflecting stray light from entering the lens. The hood also provides additional protection to the lens from accidental impacts, bumps, or scratching. It is offered here as a spare or replacement for the hood originally included with the lens.
Sample; Color mode or Image mode; Canon EF 16-35mm f/2.8L III USM: Canon: 6.9/9.9: Canon EF-S 55-250mm f/4-5.6 IS STM Canon: 5.2/8.3:
The Canon EF 16-35mm f/4L IS USM ($1,299/£1,389) was announced in May 2014. In February 2015, Canon announced the even wider and more expensive EF 11-24mm f4L USM ($2,899/£3,099). These lenses were followed by the EF 16-35mm f/2.8L III USM ($1,999/£2,199) in August 2016.
Breaking that down further, 17 are wide or ultra-wide angle including the new optically excellent Sigma 35mm f/1.4DG HSM A and Canon EF 35mm f/2 IS USM, the Canon EF 28mm f/2.8 IS USM and the exquisite but pricey Carl Zeiss Distagon T* 2,8/15 (15mm f/2.8) ZE. Standard and short telephoto lenses account for another 25 lenses, while a further 5 sKG8.