@Peter wrote:
My guess is still, as I wrote at Dpreview, laser. Pink dots in clusters are what I mostly have seen. In this case I see five clusters of bad pixels.
it seems to me that the "Fine Detail" style in the EOS R5 produces a different CR3 file than does the "Standard" style.
I don't think so, but I have never checked. I always shoot in Standard or Neutral.
What if you take two pictures at ISO 100 and CRAW with Fine Details in camera and two pictures at ISO 100 and CRAW and Standard in camera and then open the four in darktable? Choose LMMSE as demosaicing method and increase brightness with the exposure module. Now remove the crop at the left side and the top, see https://discuss.pixls.us/t/how-to-learn-image-dimensions-in-darktable/32147/27
Inspect the compression artifacts in the optical black area. Any difference?
You may be correct. The difference I seem to see may be subjective. I attempted an experiment this morning with a ceramic coffee cup under led light. My tripod is old and I did not use a remote trigger, so the image crops do not align exactly. I did not expect the light to vary, but the autofocus point did vary. Also, the camera position varied slightly. I might attempt an experiment with more variables controlled later.
Rawtherapee with no demosaic. The highest contrast seemed to be the reflected light on the curved surface of the cup, so I attempted to crop to that.
It still seems to me like the finedetail style brightens and dims some of the raw pixels slightly to achieve greater contrast when some of the settings are auto instead of manual. But, I might be fooling myself.
I put png files resized to 400% using graphicsmagick ( convert -filter point -resize "400%" ) on my web server at: https://www.rsok.com/~jrm/raw/?C=M;O=D
exiftool -s -picturestyle -iso -shutterspeedvalue /Volumes/EOS_DIGITAL/DCIM/100CANON/IMG_830[6-9].CR3 /Volumes/EOS_DIGITAL/DCIM/100CANON/IMG_8310.CR3
======== /Volumes/EOS_DIGITAL/DCIM/100CANON/IMG_8306.CR3
PictureStyle : Standard
ISO : 640
ShutterSpeedValue : 1/512
======== /Volumes/EOS_DIGITAL/DCIM/100CANON/IMG_8307.CR3
PictureStyle : Fine Detail
ISO : 800
ShutterSpeedValue : 1/664
======== /Volumes/EOS_DIGITAL/DCIM/100CANON/IMG_8308.CR3
PictureStyle : Fine Detail
ISO : 640
ShutterSpeedValue : 1/512
======== /Volumes/EOS_DIGITAL/DCIM/100CANON/IMG_8309.CR3
PictureStyle : Standard
ISO : 800
ShutterSpeedValue : 1/664
======== /Volumes/EOS_DIGITAL/DCIM/100CANON/IMG_8310.CR3
PictureStyle : Faithful
ISO : 800
ShutterSpeedValue : 1/664
5 image files read
for i in 06 07 08 09 10
do
exiftool -G0:2 -s -h IMG_83${i}.CR3 > IMG_83${i}.exif.html
done
