Strange Chromatic Aberration in C1 Pro 3.7.3

Hi,

I have a Canon EOS-1D Mk II N and I've been evaluating the DPP and C1 Pro RAW converters and although the functionality of C1 Pro is better than DPP, I'm seeing a heck of a lot of chromatic aberration (aka colour fringing) from the C1 Pro generated TIF files.

At first, I thought there was a problem with my 24-70mm 2.8L lens, but I tried some test shots with my 50mm f1.4 stopped down to f8.0 and found the same results.

I photographed a test scene with lots of highly reflective objects using flash. With C1 Pro, the highlights from the flash on the reflective objects show quite bad red and blue CA.
When I process the same RAW file in DPP, there is virtually no CA visible.

Taking the same scene with the camera set to JPEG output (highest resolution and lowest compression setting) gives similar results to the DPP processing of a RAW file.

I was using C1 Pro 3.7.3 and DPP 2.0.3.

Has anyone else experienced this problem?

Cheers, Mark.

Ulf Liljegren

26. Januar 2006 15:33

Chromatic Aberration is the inability of a lens to focus different colours on the same focal plane. Appearing as a 'colour fringe' around objects, especially at the edges of the photograph.

So it can not be more in one software over the other, only less if there is correction for it.
Capture One does not include correction for cormatic aberration on 35mm camera (Lens Cast Correction is available for Phase One camera backs though)
I did not know that DPP had correction for this.

Would you mind creating a support case of this on http://support.phaseone.com and attach one of your RAW files?

bob111

1. Februar 2006 16:47

Dear Mark

Yes, I've had this. It was much more noticeable on my 1ds mk1 than the mk2.

It is not Chromatic Abberation which gets worse at the edges of the frame.

My only solution was to paint it out in PS.

Bob Croxford

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