This is a follow-up to my previous post on vignetting corrections with the M9, here. In that post I said that I was working on a new version of CornerFix that would address the issues that I had identified. That new version is out now, as version 1.3.0.0, and can be downloaded from Sourceforge here.

To recap, the previous post showed images of the Tim Ashley's 18mm f/3.8 as corrected by the M9's in-camera correction firmware. The result was a red tint on one edge. I also mentioned that the then current version of CornerFix couldn't do much with the problem, because V1.2 of CornerFix couldn't deal with optical decentering.

However, V1.3.0.0 can.
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Thomas Lester has posted on how he's using dcpTool here, describing it as a "fantastic tool". He shows some some great example images of how the hue twists in some of the Adobe camera profiles can result in really unnatural skin tones, and how to avoid the problem by using dcpTool.

As a pro lifestyle photographer it's not surprising that he's serious about good skin tone, but what is surprising is that the camera is a Nikon D3.

There's been a lot discussion on the Leica User Forum about problems with vignetting correction on the new M9. These have shown up in a number of different images, but the image below of a white diffuser shot with a coded Leica 18mm f/3.8, which should be entirely uniform edge to edge, shows the problem well:

18mm f/3.8 with "Auto" in-camera correction

Basically, there is a red tint on the side - mostly the left hand side - of the image despite, or perhaps because of, the in-camera correction.
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Author of AccuRaw, PhotoRaw, CornerFix, pcdMagic, pcdtojpeg, dcpTool, WinDat Opener and occasional photographer....
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