Histogram	Image

We know the image has very few pure white areas, very few pure black areas, and is mostly composed of tones in the midtones.
That's either an overexposed low-key image, an underexposed high-key image, or a reasonably exposed middle-key image.
From the R, G, and B channels, we can tel there is a lot of highly saturated reds and cyans.
We can also tell there are few neutral areas, as the RGB channels don't look at all similar.
We still don't know if it's properly exposed from the histogram alone.
From the histogram and the image, we can say it's probably properly exposed

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