Which Histogram should I use in post processing?

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rambet Contributing Member • Posts: 702
Which Histogram should I use in post processing?

Which histogram should I use in post processing?

I have options to choose RGB or Luminosity histograms in the image editor. To set the maximum tonal range and not clip highlights is it better to use the RGB or luminosity histogram? I get that the RGB histogram is a chart of the number of times each value appears in the red, green and blue channels and that luminosity histogram is a chart of the number of brightness values of each pixel.

My gut and eyes tell me I should be using the luminosity histogram but I am not sure what are the disadvantages and advantages of each histogram and where one is better than the other. Any help, suggestions much appreciated.

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