dcmiller wrote:
As a 14-24 owner, I will point out that the Nikon lens is much better at 14mm that the 17TS/E.
On the 5DII diffraction is evident at f11. Some lens sharpness is hidden by that setting.
Perhaps the Nikkor is better at 14mm (do you mean it has 14, or that it's sharper at 14 than at 17?)... but does it shift? As esoteric as an UWA shift lens might seem, I'd argue shift capability becomes more valuable and more applicable to 'everyday' situations the wider the focal length. But as I already mentioned, I'd still like to see Canon release a zoom or two similar in performance to the Nikkor.
Based on my own preliminary tests with the 17, it appears the lens is sharpest at around f/8 and I noticed some slight loss due to diffraction at f/11, so both lenses probably perform quite similarly in real world applications at equal f/stops. I've noticed the 17 improves in shifted corners at f/11.
Ron