One must find images that can fit within a 5:1 frame. If your chosen images do not fit that ratio, then you have to have to be happy after the image is cropped from the top and bottom to fit a 5:1 frame. It’s simple geometry. Very simple. If the size is smaller than the max size to be rendered, then expect some fuzziness on large screens after it is scaled larger to fit the screen width, etc.
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