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We change from landscape to portrait format optically The VICOM
Format Changer optically changes the format from landscape to portrait. This is
a
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Optical change of format

The Format Changer, developed by VICOM, can be used for slide, video and data
projectors. The Format Changer
is placed in front of the lens and changes
the picture from landscape to portrait. The quality of the picture will not
be affected.
Different sizes
Format Changer is available in two different models. These depend on the
lenses and their different image ratios.
A lens with the image ratio of 2:1
needs another optical component than one with 5:1.
Model
for image ratio
Format Changer 2
starting with 2:1
Format Changer 4 starting
with 4:1
other sizes upon request
What is an image ratio? It tells you which ratio the lens has regarding
distance to width of the picture. For example:
the distance of the projector
to the screen is 4 m and the projected picture is 2 m wide, the ratio will be
calculated
accordingly: 4/2. In this case the image ratio is 2:1.