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Camera Filter Buying
Guide
A
photographic filter is called an optical filter.
They are usually made of fine glass or plastic.
Generally they are screwed or clipped onto the front
of the lenses. It modifies the images to be recorded.
They have a wide range of uses. They can darken or
lighten an image, enhance the image color, reduce
glare, protect the lenses and a host of other special
effects.