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+2.0 Ev
+1.0 Ev
0.0 Ev
–1.0 Ev
–2.0 Ev
4X as much light
2X as much light
1/2 as much light
1/4 as much light
Calculated exposure
Ev stands for exposure value. A change
of one Ev adjusts the exposure calculat-
ed by the camera by a factor of two.
WHAT IS AN EV?