The Pentax 35mm 2.4 AL is already a fine lens (tested on Pentax Kx). It is quite sharp (not quite as sharp as the Sigma 70 / 2.8 macro) and has no discernible CA on. A distortion of the visual field takes place to a limited extent, which is why the suitability as a portrait lens has yet to be tested, but I think that should just work. But what annoys me is the front cap. This is very shallow and therefore grab even hardly reasonable with relatively delicate fingers. Apart from this, recommended outright)
