I did had the same “issue” with my G80 rw2 files and a 14-140mm and 100-300mmii
Never thougth about the shading correction as rw2 altering feature.(until a resent post about this.)
Lens distortion isn’t applied in a raw either only due lensprofiles in developer application, so lighting the corners of a raw image wasn’t in my thought as feature.
Oocjpeg yes logic.
I did send @Marie some test files with shading correction active.
Maybe i need to send again this test in shading on and off.
Is there a tag in the exif data of a rw2 which flagging the active or not active feature of shadingcorrection?
Second question, i assume that the shading correction made by DxO a better choise are then the in this case Panasonic version. So i did turned it active for ooc jpegs i produce. But if it doubles in DxOPL correctionwise turning off again would be sensible.
Edit, did some reading about it and it seems somehow implemented, baked in in the rawfiles data. Don’t know how but it’s possible a correction made in the proces of creating the rawfile and applied on the pixel luminance-data.
This means if i turn it off i need to run every oocjpeg i want to keep trough DxO to correct vignetting.
Second, i can’t remember when i switched it on so i have assummed that this double correction is from the beginning i used DxO. It must be that subtle that it isn’t visible on normal images. Only at plane wide open sky shot’s.
If that’s true then maybe let it active is an option. (just turn vignetting settings in personal preset to a less active setting. And manual correct even more if it shows.)
Weather is turning to rain and clouds so when the sun is in a clear sky i will make some test shot’s with my 14-140mm in deactivated and activated setting. So DxO can analize the rw2’s. To see if it’s posible to detect the shading compensation in order to correct accordenly in vignetting tool.
(every time i think i understand something it’s kicking me in the bud.
)