Rendering out to openEXR format means you are saving 32 bit information in the channels. When you open the file in Photoshop, this is recognized. You can then attack the image with "Channel Mixer" and "Exposure/Gamma" controls that allow a brilliant, subtle variety of tweaking. Once you get the color and lightness channels and gamma correction adjusted as desired, you then "Tone Map" it back to normal 8-bit format, where all the other filters and adjustments can be made.

It's like a brightness/contrast slider on steroids.

One of the major time savers for me is this: I have to perform less fussing in Poser to get the lighting/colors perfect when I know I have that much power in post processing.

If it is an animation, as usual you can set up the adjustments as an Action and apply the correction to every frame in an Image Sequence.

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