Tonal Adjustment: Gamma or Midtones for Microscope Images

How to adjust tones without saturating pixels, and to reveal obscured visual information using a method that can be reported as a number (versus using curves where numeric value for gamma is not shown).

How to Set Gamma in GIMP

Set as in video with Levels found under Color > Levels.

How to Set Gamma in ImageJ

Find gamma correction: Process > Math > Gamma
Type value into the Gamma box:
A lower value lightens dark areas
A higher value brightens lighter areas

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