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CR3 M50 - too much Magenta Tint


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Hi, It seems that the Magenta Tint setting for images shot with WB set to Auto: White Priority in camera is excessive during processing as you can see here:

image.thumb.png.0285cd7a8bc54bee57284916f7414703.png

In this image the Tint doesn't seem to disappear until approx 3% (down from 16%) and the colors get better at 0%, but OK at -3%  ...

image.thumb.png.d0927998a115ea651b4a8ca3a224175d.png

 

Both PC’s Win 11 x64 System
PC1 ASUS ROG Strix - AMD Ryzen 9 6900X CPU @ 3.3GHz. 32GB RAM

- GPU 1: AMD Radeon integrated. GPU 2: NVIDIA RTX 3060, 6GB
PC2 ASUS ProArt  PZ13 - Snapdragon X Plus X1P42100 (8 CPUs), 16GB RAM
- Neural Processor - Qualcomm® Hexagon™ NPU up to 45TOPS 

- GPU 1: Qualcomm Adreno Graphics, 

 

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As I understand it, when processing the raw images Affinity Photo (on Windows, or on Mac when using the Serif Raw Engine) shows you the raw data. The WB you specify while shooting would affect the JPEG preview, or a JPEG image produced by the camera, but does not affect the raw data itself. And, again as I understand it, Photo expects you to handle any necessary white balance or other color corrections manually.

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
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iPad:  iPad Pro M1, 12.9": iPadOS 18.1, Apple Pencil 2, Magic Keyboard 
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1 hour ago, walt.farrell said:

The WB you specify while shooting would affect the JPEG preview, or a JPEG image produced by the camera, but does not affect the raw data itself. And, again as I understand it, Photo expects you to handle any necessary white balance or other color corrections manually.

Well the issue here is that AP isn't interpreting the RAW data correctly, and I am sure that they will perfect it. In fact all RAW processors interpret RAW data and mostly different to each other but not with an obvious tint or color cast. Note that the WB set to Auto: White Priority on other cameras such as the EOS 5DsR are interpreted correctly.

Both PC’s Win 11 x64 System
PC1 ASUS ROG Strix - AMD Ryzen 9 6900X CPU @ 3.3GHz. 32GB RAM

- GPU 1: AMD Radeon integrated. GPU 2: NVIDIA RTX 3060, 6GB
PC2 ASUS ProArt  PZ13 - Snapdragon X Plus X1P42100 (8 CPUs), 16GB RAM
- Neural Processor - Qualcomm® Hexagon™ NPU up to 45TOPS 

- GPU 1: Qualcomm Adreno Graphics, 

 

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Hi Chris, If you want some test images just let me know. I can upload them to Dropbox for you.

Don.

Both PC’s Win 11 x64 System
PC1 ASUS ROG Strix - AMD Ryzen 9 6900X CPU @ 3.3GHz. 32GB RAM

- GPU 1: AMD Radeon integrated. GPU 2: NVIDIA RTX 3060, 6GB
PC2 ASUS ProArt  PZ13 - Snapdragon X Plus X1P42100 (8 CPUs), 16GB RAM
- Neural Processor - Qualcomm® Hexagon™ NPU up to 45TOPS 

- GPU 1: Qualcomm Adreno Graphics, 

 

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OK Chris, uploaded file CR3 AWB-White Priority Magenta Tint.zip which has 2 for starters. Can find more if you like.

Regards, Don

Both PC’s Win 11 x64 System
PC1 ASUS ROG Strix - AMD Ryzen 9 6900X CPU @ 3.3GHz. 32GB RAM

- GPU 1: AMD Radeon integrated. GPU 2: NVIDIA RTX 3060, 6GB
PC2 ASUS ProArt  PZ13 - Snapdragon X Plus X1P42100 (8 CPUs), 16GB RAM
- Neural Processor - Qualcomm® Hexagon™ NPU up to 45TOPS 

- GPU 1: Qualcomm Adreno Graphics, 

 

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  • 4 years later...
  • Staff

The issue "Raw file renders with a purple cast" (REF: AF-1571) has been fixed by the developers in internal build "2.4.0.2192".
This fix should soon be available as a customer beta and is planned for inclusion in the next customer release.
Customer beta builds are announced here and you can participate by following these instructions.
If you still experience this problem once you are using that build version (or later) please reply to this thread including @Serif Info Bot to notify us.

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