"W (winhag)" wrote in message
oups.com...
Using P'shop CS2, has anyone else noticed that using the
'Lens Correction' red/cyan fringe correction is much less
effective (not able to achieve the same level of fringe reduction)
than correcting CA 'on the way in' with ACR?
Does anyone know why this would be the case?

Not sure wether it applies here, but ACR does many of its corrections
at Demosaicing time, or at Gamma 1.0 to selected colorspace conversion
time. That may introduce differences with applying those corrections
at e.g. Gamma 1/2.2 space.

Bart