Canon 16-35L or 17-40L
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26-10-09, 02:37 PM
Join Date: Jul 2009
I haven't bought either of these two as according to photozone they simply aren't good enough! Both of them should attain the same depth of field given the same parameters.
Although rather extreme distortions are an issue with both lenses at the wide end, the main problem with them is resolution at the edges, to a degree that I cannot live with. It seems that the ciritcism Canon are unable to make a decent wide angle zoom is in fact a valid one.
So you're left with a work around, there's the Sigma 12 - 24mm (which I use until Canon gets its act together); there's the excellent Nikon 24 - 24mm with an adaptor as used by Rob Galbraith; Or you stick with the lens you have and resort to stitching which will give a better resolution all across the image.
Of course this won't work if there is movement in the shot so it's a limited solution. As for front to back sharpness I'm going to do some experiments with focus stacking for landscapes in a effort to gain that bit more without losing it due to diffraction.
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