Quote - If you are using ETM and have a photo for a background or for reflections, the ETM will alter the photo. You would need to anti-ETM the photo, just like you need to anti-GC the photo if the last step is to apply GC. Anti-GC + GC = no change. Anti-ETM + ETM = no change.

i understand.

did you  got the formula for tone mapping from stewart?is TM also the function POW ?