Make +/- (not absolute) adjustments to multiple photos
I have edited all 500 images in lightroom cc (they all have different brightness values) and submited to my client for review, now that my client want all of the photos to be a little darker, is there a quick way to evenly apply a -10 brightness to all images? If so, would it work to other settings i.e. +20 sharpness or +10 contrast or + 10 Temp? Appreciated!
