On Mon, Jul 4, 2011 at 12:16 PM, John Sessoms <[email protected]> wrote:
> Do you lose resolution, or do you just lose some pixels along the edges of > the captured image? Rotation will cause some loss of resolution (in the sense of lp/mm, not just total number of pixels). Here's a thought experiment: If you rotated an image by 45 degrees, fine vertical or horizontal detail that was just barely resolved in the original image would now lie along the diagonals of the pixels. The pixel pitch along the diagonal is larger by sqrt(2), so those details can no longer be resolved in the new orientation. Obviously, the effect of a small rotation will not be nearly as severe, but you can see how some degradation is likely. Exactly how bad it is will probably depend on the antialiasing filter, demosaicing algorithm, resampling algorithm, sharpening algorithm, and so forth. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
