Nikon 5700 - Manual (Page 90)

Taking Pictur
es : The Details—Using the Camera Contr
ols (User Sets 1, 2, 3)
78
Reacting Faster to Light: Sensitivity (ISO Equivalency)
What Is “Sensitivity”?
“Sensitivity” is a measure of how quickly your camera reacts to light. The higher
the sensitivity, the less light needed to make an exposure, allowing the same
exposure to be achieved with higher shutter speeds or smaller apertures. In a
digital camera, increased sensitivity is similar to using a fast film: higher sensi-
tivities allow higher shutter speeds, at the expense of mottling, or “noise” (the
digital equivalent of film “grain”) appearing in the final image.
Adjusting Sensitivity
In User Set A, the camera sets sensitivity automatically in response to lighting
conditions. In User Set 1, 2, or 3, you can choose a fixed value for sensitivity
from four possible settings. Sensitivity is set by rotating the command dial while
pressing the ISO (
) button. The sensitivity setting cycles as follows: AUTO,
800, 400, 200, and 100.
Noise
At shutter speeds of 1 /
30
s or slower, mottling (“noise”) may appear in the final
picture. We recommend that you either choose a faster shutter speed or turn
Noise Reduction on (
117).
Sensitivity is displayed in control panel and
monitor or viewfinder. After ISO button is re-
leased, ISO icon appears in control panel when
sensitivity is above 100. At setting of AUTO,
AUTO is displayed in monitor or viewfinder
until ISO button is released; ISO icon then ap-
pears whenever sensitivity is above 100.
Press while rotating
command dial
+