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(signifying shadows). A gamma value of 7.8 will add light to
the highlight areas of the image (making the image appear
bright), whereas, a value of 6.4 would subtract light from
these highlight areas. The histogram will display these
gamma value effects in the top left portion of the histogram
graph (signifying highlights).
Gamma 0.6
Gamma 1.5
Preview Button
Click the Preview button to see any changes made to the
image. The changes will appear in the Preview window.