how does the zoom ‘mm’ in digital slr work, compared to the ‘x’ zoom in digital cameras?
comparison of zoom in ” mm ” and in multiples of ” X “.
i.e. 4 example 35mm in digital slr and like 12 X in digital cameras
mm is the length of the lenses focal length … in millimeters.
Since point and shoot cameras have lenses permanently affixed to them, the buyer needs to know what the zoom range of the lens, so they can buy one that will hopefully meet their needs.
35mm SLR and DSLR adjustable cameras’s all use interchangeable lenses, so the user only needs to know what size lens they need for the subjects they are shooting and buy the appropriate lens or lenses. For instance a 12mm on a DSLR would be used for stunning landscapes, 24-85mm for general photography and longer than 300mm for shooting sports and wildlife.
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