Hi all, I'm looking for comments on this lens, in particular: - sharpness and contrast at wide apertures - distortion - is it barrel or wavy-line, how much? - performance at close range - bokeh - how smooth is the out-of-focus blur in the background? - how it compares with the AIS 28/2.8 and AIS 35/2 I have the 28/2.8 which is a great lens, but I'd like more speed. The 35/2 is also excellent, but the bokeh is not great. For me, bad bokeh in a fast lens kind of defeats the purpose of the extra speed. Is the 28/2 the best of both? Thanks, Roland.