On Sun, May 18, 2008 at 07:03:29PM -0400, Mark Roberts wrote: > John Francis wrote: > > On Sat, May 17, 2008 at 08:23:22PM -0700, Bob Blakely wrote: > >> To do perspective correction in photoshop or any other imaging software, > >> you > >> must loose pixels, synthisize pixels or both. Shift is still the way for > >> digital purists. > > > > That's possibly true (but watch out for those loose pixels :-) > > But unless you're printing on a device with native resolution that > > exactly matches your original image, you're going to end up with > > lost and/or synthesized pixels, anyway. > > With a perspective shift lens you're using a larger-image-circle lens > and those generally (though not always) have lower resolution than > standard 35mm lenses. And by using the shift capability you are, by > definition, using more of the edge of the image circle, which is > virtually always lower resolution than the center.
While that's true for a normal lens, it isn't necessarily so for a shift lens - it gets the increased image circle by means of the shift. -- 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.
