DeepPRIME (version 5 & 6) and DeepPrime XD writes a pattern to the image when exported to an application using tiff (Mac M1, latest OS).
It also seems to do that to dng files but there it is less visible for some reason.
I discovered it by chance when viewing a part of an image in 100% containing foliage.
It took me a while to rule out different options but now I’m sure it is the noise reduction that introduces these artifacts.
The pattern can easily be seen in darker areas of a photograph when enlarged to 400%.
I’m still not sure whether or not this has detrimental effects on the picture when printed or viewed on a monitor.
I attach three screen shots of roughly the same area enlarged to 400%.
I also tested Topaz DeNoise AI and it doesn’t produce this pattern.
DxO 5 DeepPRIME
DxO 6 DeepPRIME
DxO 6 DeepPRIME XD
There are now many reports of issues with DP/DPXD on Apple Silicon Macs running Ventura with Neural Engine, and which DXO have acknowledged as a bug. We can only hope they fix it soon! see very first images here as well that I had Strange artefacts using DeepPrime/DeepPrimeXD in PL6 .
I was in contact with Robyn Whalley @ Lenscraft and he wrote an article about this problem well over a year ago. He uses an older Mac and at that time Venture was not released. In short he thinks it is something with the implementation of AI that causes these artifacts rather than the OS/hardware. You can read his article here: https://lenscraft.co.uk/photography-blog/ai-photography-software-problem/
Thanks for the link Gynther,
after reading it I found also this article https://lenscraft.co.uk/photo-editing-tutorials/the-affinity-photo-2-double-raw-processing-technique/ which I found very interesting
Gynther & Guenter – thank you very much for those links.