Clover Learning Physics Practice Test

Low-contrast images show only small differences in brightness across the picture, so there are very few distinct levels of gray. When the gray-scale is short and there are only a few shades of gray, the overall image looks flat and edges are not well defined. In contrast, a long gray-scale with many shades means the image contains a wider range of brightness levels, which creates more variation and sharper differences at boundaries, yielding higher contrast. An extreme case of low contrast would be uniform brightness with no differences, but even then the image lacks distinct detail. High edge contrast indicates clear boundaries, which is not characteristic of low-contrast images. So the description that best fits low-contrast images is the one describing a short gray-scale with few shades of gray.