It allows you to focus the image with the lens closer the object. Normal camera without a macro lens won't come into focus if you are closer than a couple of feet. With macro you can get to within a few inches.
Digital cams are great because it's just the push of a button to get into macro mode as opposed to changing or adapting the lens.
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If there is anything the nonconformist hates worse than a conformist, it's another nonconformist who doesn't conform to the prevailing standard of nonconformity.
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