Saying that gamma correction messes the output is a little like saying using a hearing aid when you are not hearing impaired messes the sound up. That's correct, using a hearing aid messes sound up IF YOU DON'T NEED A HEARING AID.

But your monitor is not able to render linear colors correctly using linear color values. Furthermore, complaining that a 100% light looks bad when gamma corrected is like saying listening to a stereo that is already loud and also using a hearing aid is too loud.

The only reason you're using a 100% light is because without gamma correction, only brightly lit things look close to correct.

There is a diagram explaining the phenomenon in this thread:

http://www.renderosity.com/mod/forumpro/showthread.php?message_id=3388435

If you're using gamma correction you don't need lights at 100%. Not even close.

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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)