I tried using Affinity Photo 1.8.4 to open my raw files...Canon CR3, and found that the images are very dark. The .jpg file that is created in camera from the raw file is much brighter. When using the earlier version of Photo 1.8.3, I don't recall this issue and I'm sure I would have noticed it. My system info follows, along with two example images.
Dell G3 3590 Laptop
Installed Physical Memory RAM (32.0) GB
Video adapter. NVIDIA GeForce GTX 1660 Ti with Max-Q Design, Adapter RAM (1,048,576) bytes
Windows 10 Home Version 10.0.19041 Build 19041
Camera
Canon SL3 firmware Ver. 1.0.2
I haven't noticed the purple coloration on my raw images.
I have included a .tiff of the raw image without any modification on my part, using Affinity Photo to export the file. I also added the in camera .jpg that was created at the same time.
Any help will be greatly appreciated.
Thank you.
Affinity Photo 1.8.4.693
_MG_1299.tiff