Extron Electronics VN-COMMANDER - Manual (Page 97)

I456GB issue 8 87
VN-COMMANDER User Guide Section 3: Creating a Presentation
Changing a Source Viewport
What is a Viewport? By default, a window that contains a source will display
the entire source frame. In other words, the source is
automatically ‘scaled’ to fit within the window.
However, if required, you can choose to zoom into any
part of the source frame, for example to exclude
unwanted or irrelevant material from the source.
The portion of the image that you zoom into is called a
viewport (see Fig.8a). A viewport can:
• be as small as 6% of the active source frame;
• have the same aspect ratio as the source or be
‘stretched’ in either the horizontal or vertical direction;
• be positioned (or panned) to ‘look’ at any part of the
source frame.
NOTE: Viewporting cannot be used on Image sources.
Whatever the size, shape or position of the viewport, the
portion of the source image that it contains will be made
to fill the entire window (see Fig.8b).
The number of viewported windows that can be present
within one scene is dependent on source types and the
size and shape of the windows.
IMPORTANT NOTE: Zooming in on part of a source will only
enlarge the image detail that is already present in the source
signal. If the image detail is poor to begin with, zooming in
will not increase the level of detail.