Excerpt: For the price of this lens I did expect a bit better build quality it feels light and cheap and a bit wobbly and it just is not a one off as I have had 2 of these.When I mount a ring flash on this lens the focus barrel sometImes does not want to move which is probably down to the clutch on the quick...
Excerpt: That said, it's not 100% perfect: the lightness comes at expense of build quality -- it certainly feels less solid than other lenses in Pentax's lineup, and you'll want that hood in order to protect the front element when you're doing macro work.
Cons: Build quality, noisy AF, soft wide-open, purple fringing
Excerpt: Sharpness is very good. But suffers from the low contrast. But resolution is very good so rising contrast or vibrance in post production is a way to get wonderfull pictures. If you can use ad adeguate lens hood (on apsc it should be for a 150mm focal... at least 135mm) things goes better.
Pros: Price/performance, 2,8, well bult, compact, good sharpness and resoution
Cons: Contrast a bit low, 100mm on apsc is a a bit too long for portrait
Excerpt: This lens is SMALL and it gives great results! However the output is at times a bit flat (probably should try with a hood) and on my copy, the focus ring is a bit "too much dampened" making it a physical effort to turn it. Maybe it wasn't used enough on this mint copy? I will remedy to that.
Excerpt: Updated review: I tested this alongside the Tamron SP 90/2.5, which is simply a brilliant lens for macro usage, with a stop of advantage over the Pentax macro offering in the M range. However, I dont have space in my bag for all these lenses at once and am whittling my collection back.
Pros: Compact tele, combination of weight, length and speed
Excerpt: This lens is lightweight, compact and discreet medium telephoto. 100mm lens effectively replaced my 135 and 85mm lens. Resolution wise i compared it to highly regarded SMC 135mm/2.5 and I cannot see any real difference.
Pros: compactness, resolution, colour rendering, A setting
Excerpt: Honestly I was kind of disappointed when I got my hands on this lens. After hearing how "legendary" it was I guess I was expecting a bit more. The build is good - all metal and relatively solid.