Casio EX-Z1 User Manual (en)

Configuring Monitor Screen Settings
A histogram is a graph that represents the lightness of an image in terms of the 
number of pixels. The vertical axis indicates the number of pixels, while the horizontal 
axis indicates lightness. If the histogram appears too lopsided for some reason, you 
can use EV shift to move it left or right in order to achieve better balance. Optimum 
exposure can be achieved by EV shifting so the graph is as close to the center as 
possible. For snapshots, you can even display individual histograms for R (red), G 
(green), and B (blue).
Example Histograms
How to Use the Histogram
A histogram towards the left side results when the 
overall image is dark. A histogram that is too far to 
the left may result in “black out” of the dark areas 
of an image. 
A histogram towards the right side results when 
the overall image is light. A histogram that is too 
far to the right may result in “white out” of the light 
areas of an image. 
An overall well-balanced histogram results when 
the overall image is at optimal lightness.