Histograms in Action

Recently we looked at how histograms show the tonal data of an image, now lets put them to some practical use.

Histograms are ideal to help us understand the contrast in our images. When a picture seems a bit “foggy”, we can look at the histogram and see exactly where the graph is unbalanced. Maybe the tonal information is mainly in the middle of the histogram, thereby showing a lack of both shadows and highlights; or perhaps the graph is mainly to the left of the centre showing that, while the dark tones are fine, the whites are underexposed.

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