Nikon Coolpix S640 User Manual

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Basic Photography and Playback: Auto Mode
Exposure Compensation
Exposure compensation is used to alter the exposure from the value suggested by
the camera to make pictures brighter or darker.
1 Press o (exposure compensation).
• The exposure compensation guide and histogram are
displayed.
2 Use the rotary multi selector to adjust the
exposure and press the k button.
• When the subject is too dark: adjust the exposure
compensation to “+” side.
• When the subject is too bright: adjust the exposure
compensation to “–” side.
• Exposure compensation can be set to values between
–2.0 and +2.0 EV.
• If a setting is not applied by pressing the k button
within a few seconds, the selection will be cancelled.
• When set to any value other than 0.0 , the value is displayed with the H icon in the monitor.
3 Press the shutter-release button to take the
picture.
• To turn off exposure compensation, repeat from step 1
and set the value to 0.0, then press k.
C Exposure Compensation Value
The exposure compensation value applied in A (auto) mode is stored in the camera’s memory even
after the camera is turned off, and reapplied the next time A (auto) mode is selected.
D Using Exposure Compensation
• The camera tends to lower exposure when the frame is dominated by brightly lit objects (for
example, sunlit expanses of water, sand, or snow) or when the background is much brighter than
the main subject.
• Negative compensation may be called for when large areas of the frame contain very dark objects (for
example, a swath of dark green leaves) or when the background is much darker than the main subject.
D Using the Histogram
A histogram is a graph showing the distribution of tones in the image.
• The horizontal axis corresponds to pixel brightness, with dark tones to the left and bright tones to
the right. The vertical axis shows the number of pixels.
• Increasing exposure compensation shifts tone distribution to the right, and decreasing it shifts
tone distribution to the left.
• Use as a guide when using exposure compensation and shooting without the flash.
Exposure compensation
Histogram
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Nikon Coolpix S640 Specifications

General

Megapixel	12.2 MP
Camera type	Compact camera
Sensor type	CCD
Image sensor size	1/2.33 \
Maximum image resolution	4000 x 3000 pixels
Still image resolution(s)	640 x 480, 1024 x 768, 2048 x 1536, 2592 x 1944, 3264 x 2448, 3968 x 2232, 4000 x 3000
Digital zoom	4 x
Optical zoom	5 x
Focal length range	2.7 - 6.6 mm
Interface	USB 2.0
Digital SLR	No
Effective sensor resolution	12.39 pixels
Focus adjustment	Auto
Super Macro focusing range	0.02 m
Internal memory	45 MB
Compatible memory cards	sd, sdhc
Display diagonal	2.7 \
USB version	2.0
Product color	White
Battery type	EN-EL12

Weight and Dimensions

Depth	20.5 mm
Width	91 mm
Height	55 mm
Weight	110 g