Pentaxforumson olvasható pár részletes vélemény + vannak képek is. (lens reviews)

Pl.: No lens is perfect, but this is the lens that the flawed 17-70 should have been. It may not have the constant f4, but it goes wider and longer and outdoes it easily in every other respect. It is sharp through the range - consistently excellent sharpness, too. 16mm is really impressive; even at 85mm it is very good indeed. Focusing is spot on: even in relatively low light it copes well, although limitations become visible (as they often do at f5.6 onwards) once the light levels dip a lot. Bokeh: surprisingly good (but do not expect 85mm f2 style bokeh). Contrast and colour: excellent. Much better than the deservedly loved 16-46 through that zoom range. Much better than the 18-135: on centre sharpness alone this beats it and across the frame it does by a distance. Better than the 18-250: good as that lens might be in many ways, it gets softer after around 65mm whereas this one is sharp all the way to 85mm wide open. Also preferable to the Sigma 17-50 in many of these respects, too.

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