Archived posting to the Leica Users Group, 2012/01/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>> LR apparently has a built in vignetting fixer in its later versions. >> ?Does LR now negate the use of Cornerfix? It's possible that CornerFix is superior to even Leica's lens-coding profiles. It is custom for each lens and body. You could even make it custom for each aperture if you wanted. Canned profiles may be less accurate for your particular setup. Actually, the issue with the 21mm Biogon is that it's a symmetrical design -- said to be terrible with the M9, with a nodal point that is way too close to the sensor. But symmetrical designs are, in my view, superior in terms of sharpness and distortion to retro-focus. The 21 Biogon is really sharp, with no distortion. My 18mm Distagon, said by some reviewers to be the best 18, is good, but not up to the Biogon. For making large prints, I was a bit disappointed in the 18, thus the 21 Biogon experiment, which luckily worked. But for ColorFix, I probably would have returned the Biogon as unusable with the M9. Paul www.PaulRoark.com