2nd sharpest lens I own behind FA77 at any aperture, and much sharper than my FA31 at any aperture, except in the corners below 2.8.
The best lens I have for distant/infinity. Not sure if it's the coating or lens design. My copy has a slight red tint, that is different from other Pentax lenses I own, so I assume that is the coating, anyway, seems to render distant detail better, not sure why.
Renders a bit on the dark side at f4, and even more so around f8. I have to give it a bit more + exposure comp, especially if to match other lenses.
Does the best job of any lens I own in controlling and showing detail in highlights. Very saturated colors.
I will keep this lens regardless of whatever other lens I own or will buy in the 30-60 range, even if they are close in FL, yes, they are tools, but this one is a bit unique.
Go to lens for me for artsy type shots, or infinity, or landscape (field of view permitting) or any tricky or bright or contrasty lighting.
Not my first choice for portraits (for my preference anyway) That's why I'll keep my M50 1.4 for this range at least until the DA*55 comes out
at 1.9
at 1.9
cropped in
not as fast focusing as the DA40, and the DA40 will probably expose more consistently for a walk-around choice, and require less effort for pleasing portrait and skin tones.