Originally posted by holdgaj Thanks for the reply
The shots were taken in raw on the Pentax & resized in Photoshop.
The 50mm FA shot was 1/640 ISO 200 F4. The 16-45 shots were
45mm 1/60 F4 ISO 100 & 45mm 1/125 ISO 800 F8.
The info about the comparison between PS & SLR apertures was helpful, thanks.
when you resize, do you atleast keep the "quality" at 100% (i think #14 or 12 in the photoshop slider)
now for the depth of field part, @ F4 and the distance i'm guessing you were shooting at, not everything will be in focus, but only specific parts within a given focus corridor (often refered to as "depth of field")
since your point and shoot is "effectivly" shot at a very small aperture, everything is in focus.
photographing roofs, at an angle, with (relativly) shallow depth of field, is ofcourse going to give you crappy results.
if you really want to run comparison tests, shoot a live subject, at 90* angles.
or do a little kitchen setup with a teapot and some flowers.
also, you shot the last shot at ISO800, and i presume no flash? Go and try that with your point and shoot...