:) what a nice lens!!! stoppe d down to f 2.8 to use for astro shootings stop ped down to f 4-5.6 for single portraits (face) stopped down to f 8-11 for flowers and butterflies th is lens is a good performer for high quaöity 2x-tele-convert ers with 7/5 or 6/4- elements, not for 4/4 type!!!

I've shot a wedding, night concert, conferences, and now a graduation with this lens. I can say that when the image is in focus, it's extremely sharp. For the graduation photos here in Japan, I had to tone down the clarity in Lightroom because I got every single pore and skin flaw every girl had. ...

Very happy with this lens. Great build. Great image quality. Autofocus is relatively fast compared to my other Pentax lenses (such as DA☆300) and tends to get accurate focus more often than them. I think the DA☆ still gives better resolving for my pixel peeping urges or severe croppi...

I've owned a Pentax-M 20mm f4 for over 30 years. I didn't use it very much in the film era. I wasn't fond of the distortion towards the edges, I thought it was soft and the colour was subdued unlike other Pentax glass I owned. When the digital era arrived with cropped sensors I gave it another try. ...

I've a lot of 50-55 mms lenses : ST 50/1.4, SMCT 55/1.8, ST 55/2.0, ST 50/4.0 1:1 (preset) and canon EF 50/1.4. and others : SMCT 28/3.5, SMCT 35/3.5, ST 200/3.5 The ST 50 1.4 8 elements is not only a collector lens ! It's also a wonderfull lens to play with. It has become my favorite lens I ...

I'm still fairly new to the Pentax 67, having bought my camera a little less than two years ago and with the 45mm, even less than that. So far, I've shot only Tri-X 400 with it. I do my own developing and I develop my negatives in Kodak D-76. This provides me with good, medium grain exposures that ...

I love this lens and feel like a fanboi, but I'm not alone--just read the bazillions of reviews of this lens with the Tamron badge. Ricoh did well to pluck this best of breed lens and offer it with Pentax labelling, coatings, and seals. There 's not a lot that I can add to all the other reviews ...

A true *Star series lens. Built like a tank, IQ off the charts good, exceptional in every way, unfortunately much heavier than FA* 80-200. Extensively tested with LensCal and Yves' calibrators. At both ends of zoom range and using LensCal stand offs and Yves' lengths, as well as a close-up. All wer...

Extensively tested with LensCal and Yves' calibrators. At both ends of zoom range and using LensCal stand offs and Yves' lengths, and a close up test, all were dead zero +- .3. Tight and crisp. Unexpectedly good. My DA* 16-35 wasn't even close, in performance at same Focal lengths and especially n...

Extensively used with LensCal and Yves' calibrators. At both ends of zoom range and using LensCal stand offs and Yves' lengths, all were dead zero +- .2. Incredible. My DA*s were not this good... Colors , sats, MF in the field also Excellent++ We ll Done Pentax!:)