118 / The histogram
The histogram
The histogram (3.3.2) represents the distribution of
brightness in the picture. The horizontal axis shows
the tone values from black (left) through gray to white
(right). The vertical axis depicts the number of pixels
of each brightness level. This form of representation –
together with the impressing of the picture itself –
allows an additional quick and easy assessment of the
exposure setting after taking the picture.
On the Leica M9, you can choose between different
versions of the histogram: These are based on either
the overall brightness or separately for the three pri-
mary colors red/green/blue, or with identification of
the areas in the picture where no image appears
because they are too bright or too dark (clipping).
Note:
The histogram display always refers to the section of
the picture displayed at that time.
Setting the function
1.
In the main menu (see p. 102/119) select Histo gram
(4.1.12), and
2. then the preferred function – Standard, RGB, or
Clipping setup, in the sub-menu, to call up the cor-
responding options.
Additional settings for clipping displays
3. In the Clipping setup sub-menu, select whether
you want to deactivate this display or whether only
overexposures (red) or both over and underexpo-
sure (red and blue) are to be displayed.
Note:
The histogram is not available when viewing several
reduced pictures at the same time (see p. 151).
A: Predominance of dark pixels,
only a few light ones: Under-
exposure
B: Most pixels are of medium
brightness: Correct exposure
C: Predominance of light pixels,
only a few dark ones: Over-
exposure
AB
C
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