Konica Minolta DiMAGE S414 - Manual (Page 51)

51
WHAT IS AN EV? WHAT IS A STOP?
Sometimes the camera’s exposure meter is deceived by certain conditions. Exposure compen-
sation can be used in these situations. For example, a very bright scene, such as a snowy land-
scape 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 values.
In the example above, the dark water caused the camera to overexpose the image making it
bright and washed-out. By compensating the exposure, detail is brought out in the leaves, and
the stones and water appear richer.
Shooting tips
Ev stands for exposure value. The term stop comes from the name of aperture plates used in early
lenses. A change of one Ev or one stop will adjust the exposure calculated by the camera by a factor
of two.
Change in Ev Change in stops Adjustment to exposure
+2.0 Ev
+1.0 Ev
0.0 Ev
–1.0 Ev
–2.0 Ev
+2 stops
+1 stop
–1 stop
–2 stops
4X as much light
2X as much light
1/2 as much light
1/4 as much light
Calculated exposure
–2.0Ev –1.0Ev Calculated camera
exposure