Quote - How do you gamma correct a render? 

I know about calibrating monitors, but I've never heard of calibrating/gamma correcting  a poser render before.

Isaoshi linked you above to my thread on how to build a GC shader.

Here is a link to the Artistic Lens thread, wherein I show how to do it with a prop.

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2754029

And here is my previous GC reminder thread. Some interesting stuff to read there if you missed it.

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2757170

Somebody in that thread asked how to do it with PSP 9. I don't know the answer. I don't know how in postwork - I don't do that. I know that Photoshop "Levels" and move the middle slider to the left is somewhat like GC, but mathematically not identical.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)