Originally posted by Photobill 20-40 LTDI do not own one and am VERY curious about it. It seams like it would be a perfect fit on an APSc body. Paired with a Pentax WR body you should have the perfect outdoor all weather combo.
Pros: Compact (about the size of the 18-55). Attractive design, beautiful build quality. Images have the Limited family qualities: contrasty, excellent colours. Images have character (similar to the DA 15, for example). Overall rendering is lovely. Bokeh can be very pleasant. WR, Sharp enough, even from wide open (my copy anyway). CA is generally well-controlled. HD coatings provide good flare resistance.
Cons: It's known for field curvature at the long end - not an ideal choice for flat-plane images (like buildings). Not immune from purple fringing in high-contrast scenes. Doesn't do starbursts. Dinky lens hood looks cute, but doesn't do much (I replaced it with a petal hood, which also meant replacing the lens cap). Focal range can be limiting compared to 16-50, 16-85, 17-70, 18-135 - but that's the trade-off for small size and Limited quality.
My current preferred KP walkaround kit (which is lighter and cheaper but slower and less premium than the one Sandy suggested) is DA 15 Ltd, 20-40 and 55-300 PLM (all HD coatings). If you prefer speed and pixie dust to reach at the tele end, you could substitute a DA 70 Ltd, FA 77 Ltd or DFA 100 and get knockout image quality.
The 20-40 does pair really well with the KP, although I'd personally feel rather constrained if that were the desert island combination.
Last edited by Des; 10-04-2019 at 01:32 PM.