CR3 Multi-Exposure has incorrect colors

[timsurber]

Short description
When using the multi exposure mode on Canon EOS R6 the RAW File(multi_exposure_zip) (.cr3) has wrong colors, in my case a red tint.

Steps to reproduce

1. Open the attached RAW file taken with multi-exposure mode
2. Open it in RAW Therapee Editor
3. Observe color / histogram

Expected behavior

• The expected image is shown in a neutral gray, like it was taken and is shown on the preview or in Adobe Photoshop

Actual Behaviour

multi_exposure.zip

[Lawrence37]

Confirmed. The image has a strange white balance. The dng created by Adobe DNG Converter opens fine, but the white balance tint is over 4 using the Camera white balance.

[Lawrence37]

The white balance is baked into the image. A simple solution is to use the unit multipliers as the camera WB. There is still the problem of the temperature and tint values not making sense.