Overexposure- occurs when there is too much light. The aperture could be too wide, the shutter speed too long or the film speed incorrectly set too low. With digital cameras and slide films the result is a thin, washed-out image. The highlight detail is gone completely.
Underexposure- Happens when there is not enought light. Although neither is recommended, it is easier to correct an underexposed digital image than one that is overexposed. The aperture could be not too small, shutter speed not short or the film speed high set too high.
Taken from the book: "The Manual of Photography" by Ralph E Jacobson, Sidney F Ray, Geoffrey G Attridge.
1. Screen grabs for
a) over-exposed
b) correct-exposed
c) under-exposed
2. Examples from school, with Input and Output Levels.
a. over exposure
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