Your terminology made this more difficult to answer.
At least in Photoshop, Equalize is found under Adjustments, not under Filters. Since Levels, Curves, Channel Mixer and the like are also found under Adjustments, I'd have to guess that Equalize is legal as long as it is applied to the entire image at once. One disadvantage (in older versions at least) is that it can't be applied to an Adjustment Layer, and so provides less control and "undo" capability.
I'll be curious to see under what circumstances you found this a desirable effect .... |
