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WASHING - The rinsing of film or photographic papers with water to remove chemicals from them.
WASHING AGENT - A solution that reduces washing time by more quickly removing processing chemicals.
WAVELENGTH - The distance from peak to peak in a light wave that determines the color of the light.
The 24mm lens is a WIDE-ANGLE LENS.
WETTING AGENT - A chemical solution that lowers surface tension and causes film to dry faster and more evenly, thereby reducing the risk of water spots on the film.
White balance adjusts for the light falling on a scene so that its colors are properly rendered.
WHITE BALANCE - A digital camera analyzes a scene using its white balance mode to determine areas that should be recorded as pure white. The camera adjusts the overall scene's color balance so that the areas meant to be reproduced as white in the picture will be white, thereby also adjusting all the other colors in the scene using the same color shift values, so that all color is accurately represented. A digital photographer can usually set the white balance to suit the light falling on the subject. Some cameras will automatically set white balance.
WIDE-ANGLE LENS - A lens with an angle of view that is wider than that of a normal lens, or that of the human eye. A wide-angle lens has a focal length shorter than the focal length of a normal lens. The focal lentgth of a wide-angle lens is less than the diagonal of the film format or the digital sensor.