Quote Originally Posted by Busted Knuckles View Post
So I saw in one of pages at Canon usa, a feature they referenced as "diffraction correction" any thoughts on this feature? Seems like an interesting feature that would be very helpful on the S/R and other crop bodies. Or did I miss something for the last several body releases?
It's part of the Digital Lens Optimizer corrections. Don't be too impressed, though - it's a 'pay no attention to the man behind the mirror' thing. The effect of diffraction is a slight softening (or more, at very narrow apertures). So, 'diffraction correction' is Canon marketspeak for sharpening, applied based on the predicted diffraction (aperture relative to pixel size).