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What is an ev – Konica Minolta DiMAGE Xi User Manual

Page 49

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Sometimes the camera’s exposure meter is deceived by certain subjects. Exposure
compensation can be used in these situations. For example, a very bright scene,
such as a snowy landscape or a white sandy beach, can appear too
dark in the captured image. Before taking the picture, adjusting the
exposure by +1 or +2 Ev will result in an image with normal tonal val-
ues.

In this example, the dark scene appears bright and washed-out on the
LCD monitor. By decreasing the exposure by –1.5 Ev, the richness of
the sunset is preserved.

49

What is an Ev?

Ev stands for exposure value. A change of one Ev will adjust the exposure calculated by the camera
by a factor of two.

Change in Ev

Adjustment to exposure

+2.0 Ev

+1.0 Ev

0.0 Ev

–1.0 Ev

–2.0 Ev

Calculated exposure

4X as much light

2X as much light

1/2 as much light

1/4 as much light