Serif PhotoPlus X3 ECD518624M Manual De Usuario
Los códigos de productos
ECD518624M
Manipulating Images
63
To select specific channels for edit:
1. Select the Channels tab. All channels are switched on and are shown
by default.
2. Click on the channel you want to select—the other channels will be
deselected and hidden automatically. Use Shift-click to include
additional channels if necessary.
additional channels if necessary.
3. Apply the adjustment, special effect, painting operation, etc. to the
selected channel(s).
When you switch on a channel it is made visible in isolation by
default.
Interpreting histograms
The Histogram tab is used to view the distribution of colors and tones spread
throughout your current selection, selected layer or entire photo (by default).
This gives an opportunity to view and interpret a complete snapshot of the range
This gives an opportunity to view and interpret a complete snapshot of the range
of colors and, most importantly, the distribution of pixels that adopt those
colors.
The histogram doesn't carry out any adjustments by itself, but it is useful for
The histogram doesn't carry out any adjustments by itself, but it is useful for
evaluating the kinds of image adjustments that may be needed. This decision is
up to the photographer and his/her own personal judgment.
For any channel, the horizontal
X axis represents the range of
X axis represents the range of
tones, each tone is at a specific
level. Think of the histogram as
being split into three portions—
being split into three portions—
Shadows, Midtones, and
Highlights.
Highlights.
The vertical Y axis is the relative pixel count at each of the levels on the X axis
described above. The higher the graph is at any level, the more pixels reside at
described above. The higher the graph is at any level, the more pixels reside at
that particular level. Remember that this histogram could refer to a Red, Green,
Blue, RGB or luminance channel.
Blue, RGB or luminance channel.