Probably similar do aerial photography of Earth. Treating a wide band as one gives you more light and thus a sharper image. https://en.wikipedia.org/wiki/Pansh

Probably similar do aerial photography of Earth. Treating a wide band as one gives you more light and thus a sharper image. https://en.wikipedia.org/wiki/Pansharpened_image https://en.wikipedia.org/wiki/Pansharpened_image