Application Note

Application Note: Shading In Large Image Sensors ...Why Are The Corners Of My Image So Black?

Source: PCO-TECH Inc.

The technical term "shading" describes the light fall-off observed towards the edges of an image. When applied to a digital camera system, "shading" describes the result of various physical phenomena such as lens vignetting and the angular dependence of quantum efficiency due to the use of microlenses.