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Photographic Accessories
By Larry Nixon | January 13, 2012
FILTERS
Filters are glass or plastic objects which are placed in front of the camera lens in order to change the effect of the light which strikes the film. Light which is the same color as the filter passes through to the film, while the complementary color of the filter is blocked. Not all filters can be used with color film. Two of the most useful are listed below.
One of the most useful filters for color film is the polarizer. It is the only filter which can be used to darken the sky in color photographs without changing the color. It also saturates colors and helps eliminate reflections. Notice the darkened sky in the photo at the right. Polarizers can also be used to reduce reflections from glass and water and some metallic objects.
Another useful filter for color film is the ultraviolet (“UV”) or “haze” filter. It reduces the effect of atmospheric haze but does not affect the color. This filter is also useful in flash photography because electronic flash sometimes produces an overall blue cast in the picture. This is due to ultraviolet light which is emitted by the flash. You should always use a UV filter when taking pictures via electronic flash.
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