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Bright pink color cast with (some?) DNG files #334

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afontenot opened this issue May 17, 2019 · 9 comments
Closed

Bright pink color cast with (some?) DNG files #334

afontenot opened this issue May 17, 2019 · 9 comments
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@afontenot
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@afontenot afontenot commented May 17, 2019

Describe the bug
All of half a dozen or so DNG files I tested display in nomacs with a bright pink color cast (much stronger than can be explained by something like nomacs ignoring embedded white balance information). The DNG image displays correctly in Lightroom, Darktable, gThumb, and RawTherapee. TIFF images created using dcraw also do not have this problem.

To Reproduce
Steps to reproduce the behavior:

  1. Convert a Canon RAW file (.CR2) to Adobe's DNG format (Camera Raw version 11.2) using Adobe tools (e.g. Lightroom). Lossy DNG mode is not enabled.
  2. Open the image in nomacs.

Expected behavior
The image displays correctly.

Screenshots
Screenshot_20190517_105955

Desktop (please complete the following information):

  • OS: Arch Linux
  • Linux kernel version 5.0.13
  • nomacs version 3.12

Additional context
Issues with pink images have sometimes occurred with other raw files and other programs, as a web search will quickly reveal. However, I haven't been able to find a common thread to all of them. At least in this case, other image viewers and raw file editors are displaying the image correctly.

I have included a sample image in case you can't replicate this with raw files of your own: https://drive.google.com/file/d/1ilDcG_8jvYp9hoVbPo9_qmlg7feQIlzv/view?usp=sharing

@afontenot
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@afontenot afontenot commented May 22, 2019

Some additional information: I've since found that for a certain subset of raw files, RawTherapee and other dcraw based programs show the same bug. The difference is that every DNG file I've tested with nomacs has shown this problem. Beep6581/RawTherapee#4695

@diemmarkus diemmarkus added the bug label May 22, 2019
@diemmarkus
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@diemmarkus diemmarkus commented May 22, 2019

thanks for reporting - I'll have a look at it

@mdnava
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@mdnava mdnava commented Dec 26, 2019

Try converting to a lesser DNG version. I prevent the magenta/pink cast in Adobe DNG Converter by using the "-dng1.3" command line option (without quotes).

@dashuigang
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@dashuigang dashuigang commented Mar 17, 2020

how to fix it for win?the new version was not fixed it

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@dashuigang
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@dashuigang dashuigang commented Mar 17, 2020

the DNG by mobile phone

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@diemmarkus
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@diemmarkus diemmarkus commented Apr 22, 2020

img-2020-04-22 14 28 28

@afontenot
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@afontenot afontenot commented Apr 23, 2020

Awesome work, thanks!

@incodnita
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@incodnita incodnita commented Jan 12, 2021

img-2020-04-22 14 28 28

I still have this problem with the last nomacs stable and beta builds. I'm using Windows 10. It happens with all the RAW (.dng) files from my OnePlus 7T. In the others apps they looks as they have to.
Maybe this fix is not implemented yet? Maybe this fix doesn't work with all RAW files?
Thank you for your work and sorry for my poor english.

@ANDALACA
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@ANDALACA ANDALACA commented Dec 24, 2021

Hi - still an issue here with a DNG from Pixel6Pro, running x64 3.17.2206. Dark purple/violet here.
image
where it should be
image

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