Equalight is a program for all fine art photographers that need a solution for lighting falloff. Equalight compensates an image for lens falloff and lighting falloff. Lens falloff, also known as cosine fourth falloff, is a result of bending light through a lens and its aperture. The wider angle the lens, the more the light intensity falls off from the center to the edge of the image. Lighting falloff is caused by the drop in intensity as the distance from the light is increased. The type of lamp, its shape, and the size of the lighting fixture, its reflectors and diffusers, all of these can affect the light intensity distribution.
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