http://www.fotofach.de/ 377-278 http://www.fotofach.de/festbrennweiten-erfahrungsberichte/pentax-smc-da-200-mm-f28-ed-if-sdm/ The Pentax SMC DA* 200mm f/2.8 ED [IF] SDM is a very welcome addition to the Pentax lineup. The performance is generally on a very high level. In terms of resolution and contrast the lens is able to produce very good results straight from the max. aperture setting. The level of distortions is absolutely negligible and vignetting and lateral chromatic aberrations (CAs) are not overly field relevant. The quality of the bokeh (out-of-focus blur) is very decent. However, there are also flaws. In critical scenes (extreme contrast) the lens shows a rather high amount of purple fringing and longitudinal chromatic aberrations (LoCA), colored out-of-focus halos, are also higher than average. These two issues do probably originate in the rather old base design of the lens dating back to 1993. The mechanical quality of the lens is absolutely exceptional thanks to high quality materials and seals against dust and moisture. The new ultrasonic AF drive (SDM) works like a breeze - it's both fast and almost silent. All-in-all a quite sound offer although a comparatively expensive one. ]]> Thu, 01 Apr 2010 12:03:16 +0200