Originally posted by Wheatfield Actually, the 15 is somewhat soft in the corners, even taking field curvature into account. It doesn't mean I love it any less, it is just a characteristic of the lens.
"Somewhat" indeed, but not to the extent that one might think from brick wall tests.
And in any event, again, whatever softness might exist in the corners is there omly until only until you stop down, at which point it *measurably* meets or beats all comers as reported by photozone and verified in countless posted sample i,ages. And thus the claim that it is not adequate for "scenery" * - which would virtually always be shot stopped down amyhow to get more DOF - just doesn't match reality.
Plus, of course, if you don't stop down, with a wide angle lens the corners will only very rarely be in focus, so the corner performance ends ip being pretty irrelevamt.
* Unless by "scenery", he really mean stage prop backgrounds, which might indeed be perfectly flat, and shot under relatively low light that might otherwise encourage shooting wide open, at least if you have to shoot it handheld for some reason. Basically, a brick wall, except probbaly made of wood and painted to look like a brick wall. In that case, the field curvature as well as the corner softness will come into play. So indeed, the DA15 is not the ideal brick-wall-shot-handheld-under-poor-light lens, but that's about the worst you can say about it.