DPreview just posted a review on the new Nikon 50mm lens
Just posted! Nikon 50mm F1.4G lens review. To sum it up, this lens is ideal for those Nikon users who have the D40, D50 and the latest D5000 which does not incorporate a built in auto focus in the body. This lens has the built in focus motor (designated as "AF-S" in Nikon speak) plus it has a very fast aperture of 1.4 which is ideal for low lighting shooting. The only caveat is you do have to pay the extra $$$ for the faster speed. In this case, the lens MSRP $485.00 US. I may upgrade to this lens from my older 50mm F1.8 lens just for the sheer lens quality.
Here's the Pros/Cons from the review:
Conclusion - ProsExtremely even image quality across the frame, even on FX Improved image quality over 50mm F1.4D at large apertures Exceptional image quality when stopped down Essentially no lateral chromatic aberration Near-silent AF-S focus with full-time manual override.
Conclusion - ConsSlightly soft at large apertures Somewhat susceptible to flare Longitudinal (bokeh) chromatic aberration, most visible at large apertures Vignetting at large apertures on full frame (essentially disappears by F2.8) Slower autofocus than the screw-drive AF-Nikkor 50mm F1.4D.
Check out this
link DPreview's review for more detailed info and sample photos.
jp