Purple/Pink display with Canon Powershot S100 CR2 Files

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What steps will reproduce the problem?
1. shot with canon S100 in RAW+JPEG
2. get the image on the PC
3. open with photivo, you will have the picture without the original colors and 
a bit deformed

What is the expected output? What do you see instead?

Normally the correct picture with correct colors
And I have a pink picture anb deformed

What version of the product are you using? On what operating system?

latest (2012-01-22)

Please provide any additional information below.

Original issue reported on code.google.com by jphi.tr...@gmail.com on 25 Apr 2012 at 6:39

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sorry cannot attach the file as it is too big (12M)
Note: 
* the this is not a matter of codecs as I already installed the latest codec.
* tried with XP and Ubuntu: same issue

Original comment by jphi.tr...@gmail.com on 25 Apr 2012 at 6:43

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Some discussion thread about the issue there:
http://photography-on-the.net/forum/archive/index.php/t-1133060.html

One picture with the issue here:
http://macandphoto.typepad.com/files/img_0125.cr2

Original comment by jphi.tr...@gmail.com on 25 Apr 2012 at 6:51

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Thanks for reporting. Confirmed with the cr2 you linked to.

However the culprit is not Photivo but dcraw. Photivo has dcraw 1.445 built-in 
to decode raw files. Standalone dcraw 1.445 exhibits the same problem. The good 
news: The most recent standalone dcraw 1.447 works fine. So the problem will be 
gone once we update dcraw in Photivo. I can’t say exactly when this will 
happen, though.

Original comment by brother.john.gm@googlemail.com on 25 Apr 2012 at 8:41

• Changed state: Accepted

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I've had this issue also on Raw files. Shot in Aperture priority, no special 
settings.

Original comment by larson.p...@gmail.com on 9 May 2012 at 2:41

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On Ubuntu 12.04 (with some enhancements from following 12.10) I compiled 
Photivo from most recent source (also GraphicsMagick 16-bit depth). Aware of 
the dcraw issue, I obtain version 1.447 dcraw.c and also disabled wget in its 
update script, in the photivo/ReferenceMaterial/dcraw source folder.

Photivo compiles easily (thanks to clear insructions on the wiki). However, 
even with dcraw 1.447, I still get the magenta -grey problem for *.CR2 files 
from my Canon S100. I note that I can first convert to *.dng and then there's 
no problem.

When I open a *.CR2 in Photivo, with the incorrect colors, Changing a color 
profile (using a local *.icc file of any kind) does not help.

This isn't paticular to ubuntu (Linux). I also have the pe-compiled Windows 
verion of Photivo, and seen the same problem, as was previously reported.

I notice that the problem is NOT a matter of white balance or color 
temperature. When I look at the values for each color channel, I not that for a 
grey-ish subject, the red and blue channels have intensities clustered where 
expected, but the green channel has intensities clusered at the other end.

To clarify what I mean: If the subject's blue channel has peak intensity 
clustered near value 200 (out of 255) when brought into Photivo, and the red 
channel clustered near 180, then the green channel will be clustered near 60 
rather than the expected 195. In the green channel, bright is dark and dark is 
bright.

I have attempted to randomly change some numbers within dcraw.c, but I cannot 
actually program, and I don't know what the numbers mean. So far, no luck.

Aside: For those who ask about distortion (curvature of image), what you are 
seeing is the actual unprocessed image as it comes from the camera. The lens 
itself causes the distortion, which is most noticeable at wide angles. The 
camera's JPEG output was pre-processed by the camera, to remove the distortion. 
If you use Canon's own DPP program, it also pre-removes the distortion. In 
other words, Photivo is not causing distortion; it is merely not removing the 
original distortion.

Original comment by hahbumb3...@gmail.com on 3 Jun 2012 at 6:05

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Actually the dcraw.c file in ReferenceMaterial is not part of the Photivo 
source code. It’s just there for reference. Updating that file won’t change 
anything in Photivo itself. The “productive” dcraw is in Sources/ptDcraw 
but updating that one is not exactly trivial.

Original comment by brother.john.gm@googlemail.com on 3 Jun 2012 at 7:33

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Ah. Well, I cannot write code (just cut and paste), so if the file change is 
not exactly trivial, I'll have to wait. Meanwhile, I can communicate with 
Photivo via DNG.

Original comment by hahbumb3...@gmail.com on 4 Jun 2012 at 9:53

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Works with current source. Please get an update biary or build from current 
source.

greets mike

Original comment by m...@mm-log.com on 29 Sep 2012 at 11:48

• Changed state: Fixed