Leonard Shepherd
Forum Pro
You have not said what quality you want, whether you want AF, whether you will be pre testing for sensor induced CA and other sensor induced artefact's or whether f2 or faster is critical..
I am intrigued by claims of high contrast etc. for the f1.4. I have never seen a lens test or owned a 1.4 lens with high contrast at f1.4. Nikons full aperture MTF at http://www.nikonimaging.com confirm by recent DX lens standards the f1.4 is poor wide open and the f1.8 is not good at f1.8.
There are compromises with fast lenses. Examining Nikons full aperture MTF for the not optically brilliant 18-200 shows higher sharpness and implies better detail at around f5.6 than the new Zeiss 50 and 85 f1.4's in Nikon mount using the Zeiss f5.6 MTF.
In terms of "ultimate" optical quality the 17-55 at 50mm is likely to come out best, though it's maximum aperture is f2.8.
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Leonard Shepherd
Usually skill in using equipment has more to do with good photography than the equipment itself.
I am intrigued by claims of high contrast etc. for the f1.4. I have never seen a lens test or owned a 1.4 lens with high contrast at f1.4. Nikons full aperture MTF at http://www.nikonimaging.com confirm by recent DX lens standards the f1.4 is poor wide open and the f1.8 is not good at f1.8.
There are compromises with fast lenses. Examining Nikons full aperture MTF for the not optically brilliant 18-200 shows higher sharpness and implies better detail at around f5.6 than the new Zeiss 50 and 85 f1.4's in Nikon mount using the Zeiss f5.6 MTF.
In terms of "ultimate" optical quality the 17-55 at 50mm is likely to come out best, though it's maximum aperture is f2.8.
--
Leonard Shepherd
Usually skill in using equipment has more to do with good photography than the equipment itself.