I have a Tamron 90mm SP AF lens that is widely regarded as having some of the best bokeh ever, some have said better than comparable Leica primes. On close comparisons I found that my Pentax SMC-F 50 1.7 has equal bokeh, seems to be slightly finer even. We can talk all day, but I've seen the goods. Sure my old Takumar 200 lens occasionally rendered out of focus highlights with hard edges, but in general that didn't happen. That lens is also 40 years old and a telephoto. I've seen plenty of crappy Bokehs from Canon and Sigma, which is more along the lines of whom Pentax competes with. If you haven't actually used Pentax's finest, then there is no sense in comparing Pentax to a fine quality manufacturer like Zeiss.
-That Guy Alan Chan wrote: "That raises another question. Are the bokeh and contrast of Pentax lenses really that good as some might suggested in general? I personally feel the bokeh of most Pentax lenses that I have used are okay, but not that great except maybe a few. Many have the bright-ring bokeh chatacteristics. Contax Zeiss lenses, in general, have better colour, contrast and bokeh imho. But then this is not a Contax list. :-)"
