Using the Histogram

A histogram shows the brightness distribution of an image. The horizontal axis represents brightness (dark at the left and bright at the right) and the vertical axis represents the number of pixels.

The shape and the distribution of the histogram before and after shooting tells you whether the exposure level and contrast are correct or not, and lets you decide if you need to adjust the exposure and take a picture again.

1Adjusting the Exposure (p.107)

1Adjusting the Brightness (p.189)

pixels

 

 

 

 

 

 

Number of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Dark) Brightness(Bright)

 

 

 

 

 

 

 

Dark

 

portions

Bright portions

 

 

 

 

29

1

Using Before

Camera Your

Understanding Brightness

When the brightness is correct and there are no overly bright or dark areas, the graph peaks in the middle. If the image is too dark, the peak is on the left side, and if it is too bright, the peak is on the right side.

 

 

 

 

 

 

 

Dark image

 

Image with few bright

 

Bright image

 

 

 

or dark areas

 

 

When the image is too dark, the part to the left is cut off (dark portions with no detail) and when the image is too bright, the part to the right is cut off (bright portions with no detail).

Bright portions blink red and dark portions blink yellow on the monitor when [Bright/Dark Area] is O(On).

1Playing Back Images (p.74)

1Setting the Display for Instant Review (p.249)