Pentax K-5 IIs Operating Guide

34

Before Using Your Camera

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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 

tell 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.

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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).

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Distribution of color intensity is displayed for each color in the RGB 

histogram. The right side of the graphs look similar for images that have 

White Balance adjusted well. If only one color is lopsided to the left, that 

color is too intense.

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Using the Histogram

←

 N

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f pi

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Dark portions

Bright portions

(Dark) ←Brightness→ (Bright)

K-5 II_ENG.book  Page 34  Wednesday, October 10, 2012  1:20 PM