"Rob Studdert" <[EMAIL PROTECTED]> wrote: >The loss (ie compression/stretch) is but a very small percentage in most but >extreme cases of correction that no 35mm PC lens could achieve anyhow.
Essentially you're enlarging the top part of the image more than the bottom part. It's really no different from making a slightly larger print, in terms of information loss. >I've made digital corrections to quite a number of images >over the last few years and none have exhibited visible image degradation. Anyone with a 28mm shift lens coming to GFM this year? I'd love to compare a perspective-corrected photo taken with this lens and a Photoshop-corrected photo taken with a top-notch standard prime (say, an FA 28/2.8AL or 31/1.9 Limited). Since perspective correction has greatest effect at the edges of the frame, where most lenses are at their weakest, I'm really curious as to what the outcome would be. My money would be on the 31 Limited with Photoshop correction. Don't know about the FA 28/2.8AL. -- Mark Roberts Photography and writing www.robertstech.com
