If, after a certain exposure level, the LiveView does not brighten any more, or if the brightening is applied in the processing pipeline after the raw data (happens at very long exposures), Auto ETTR may believe the image is underexposed and keep raising the exposure settings.
Yeah I though of that but actually i'm not doing 10 second exposure i'm just setting the maximum slow shutter for the AETTR, and the prob is that when the image gets a bit dark instead of having slower shutter speed it's resetting the value I set it in the begging and it's raising the ISO. I also tried setting it to 6 sec as slowest shutter speed same thing.
That raises another question, if it took a long exposure and the LiveView does not brighten any more doesn't it check the RawHistogram of the preview image after that? (histogram set to "Raw RGB" in "draw all modes" and the "Raw EV indicato"r to "ETTR hint" mode and i have 2 sec preview) or am I just mixing everything up now?
I'm not sure what u mean with the white balance @A1ex, the images seems fine when I open them no pink pixels on anything weird.
I have a question if the overall exposure changes quickly in like 3 images could that be the reason it's behaving like that?
Thanks again for you time