how does photoshop exposure tool modify colors?

Question

I would like to know how the Photoshop Exposure tool works (In CS4 it's Image -> Adjustments -> Exposure...) There are three sliders: Exposure, Offset and Gamma Correction. I am interested only in the Exposure slider, ignoring the other two. It seems like it tries to simulate the behavior of exposure value of a camera: http://en.wikipedia.org/wiki/Exposure_value Does it take a value x > 1 and the EV from the slider, and multiplies all color channels by x^EV? I am making a program that adjusts exposure and this approach seems close enough. But isn't there something else? Thanks for your answers.

Answer 1

If you want to make your image pop without losing saturation from exposure, try boosting brightness and contrast, or simply boosting contrast after you've upped the exposure.