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controlling saturation
i was wondering how a guy could control saturation with an expression. i have a foto that i would like to control with an expression to desaturate and possibly also control the lightness.
i have thought i would be able to use a hue/saturation effect but i cannot control it for some reason. i then tried a fill but with that i could not reveal the original image. does anyone have a solution for this?
thanks for the help.
ps- i used the rgbtohsl expression and then back to rgb. i can control the values with the expression but not to reveal the original material.