Manual

HISTOGRAM

The histogram is a graph depicting the distribution of brightness values in

the image for each of the three color channels (Red, Green, and Blue) (The

histogram displayed in the Shooting Mode is the distribution of tones in the

image). The horizontal axis shows the brightness level, with darker pixels

towards the left side and brighter pixels toward the right. The vertical axis

shows the proportion of pixels at each level of brightness.

By examining the histogram of the full image, you can gauge the overall

exposure of that image. You can also use the histogram to determine if

zoomed-in sections of an image are over or under exposed.

This histogram shows that the higher pixel

values are never used in the image,

indicating that the image is underexposed,

and therefore will appear dark. In general,

when the histogram is higher on the left

side, the image is mostly composed of

dark pixels, causing it to appear

dark—either because the image is

underexposed or because it is a dark

scene such as night shot or sunset.

This histogram shows a fairly even

distribution of pixel values, indicating that

the image is well exposed, with good

contrast. However, the histogram

distribution of a well exposed image will

vary greatly depending on the subject.

This histogram shows that many of the

pixel values are at their brightness limit,

indicating that some areas of the image

may be blown out. In general, when the

histogram runs off the right side, the image

will have many white pixels—either

because the image is overexposed or

because it is a bright scene such as the

beach or snow.