This is for Canon:
I took some pictures to check vignetting. I took from widest aperture to f/11 in two sets. One with Peripheral correction off and one with Peripheral correction on.
No lens correction data about 85/1,4L IS for my 6D, so just one set. I will need to download lens correction for that lens to that camera later.
For Canon EOS M5 the tags 0x0014 to 0x0018 are changing with the aperture.
For Canon EOS 6D the tags 0x000d to 0x0012 are changing with the aperture.
For M5 + 50/1.2L at f/1.2 I got:
6898 4939 2757 2041 1481
or if I also include values that aren’t changing or not changing much:
8191 6898 4939 2757 2041 1481 0
For M5 + 50/1.2L at f/11 I got:
8093 7811 7246 6954 6653
or
8190 8093 7811 7246 6954 6653 0
For 6D + 50/1.2L at f/1.2 I got:
6898 4939 2757 2041 1481
or if I also include values that aren’t changing or not changing much:
8191 6898 4939 2757 2041 1481 0
For 6D + 50/1.2L at f/11 I got:
8093 7811 7246 6954 6653
or
8190 8093 7811 7246 6954 6653 0
Exiftool command:
exiftool -csv -u -U -H "-Model" "-lensID" "-ApertureValue" "-*Peripheral*" "-*Vignetting*" *CR2 > M5-6D.csv
M5-6D-7D.ods (113.6 KB)