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CHAPTER 5: What to Expect from Converted Computer Images
We have included this section to give
you some insight into what you can
and should expect computer images
to look like once they are converted
to standard video. People are some-
times surprised that computer
images converted to video do not
look as sharp and vivid as they do
on the computer monitor. Although
this may be somewhat disappointing,
it should come as no surprise.
Color TV and video monitors, and
the conventional video standards
they use (NTSC and PAL), have
been with us since the 1940’s
and 50’s. When high-resolution
computer-graphics standards such
as Mac II were introduced less than
a decade ago, new display techno-
logies had been developed to
achieve higher detail and sharper
colors. But, although many design
improvements have been made to
TV monitors and VCRs, they are still
limited to basic technologies that are
40 years old.
Scan converters like the Video
Converter Pro for Mac were created
to bridge the gap between the
dissimilar standards of computer
video and conventional video
equipment. They work, but the
trade-off in the process is that you
are taking computer images whose
sharpness and detail are clearly
visible on today’s monitors and
displaying them on TVs, or recording
them on VCRs, that can’t do them
justice. But all is not lost. There are a
few things you can do to get the best
image possible on your TV/monitor
or recorded on video tape. The tips
that follow will all contribute to
improved quality of your display
and/or VCR recording.
• In the world of video, black,
white, and all the shades of gray
are not processed the same way
as “real colors.” TVs and VCRs
process these shades with a
minimum of distortion. When
it’s possible, consider using
grayscale images, because
they’ll be much sharper than
the equivalent colored images.
• The “Christmas Effect” occurs
with computer images created
by artists who really like the green
and red color combination.
Nothing looks worse on a TV.
Try to avoid saturated colors.
• Sometimes graphics look so
impressive on a computer
monitor that users assume that
the process of conversion to TV
can’t possibly make the graphics
look bad. However, what TVs will
actually show, especially if they
are displaying a video signal that
was “beat up” by a VCR recording,
can be ugly. To avoid such nasty
surprises, connect a Converter
and TV to your computer and
view your “televised” graphics
while
you create them,
before
you
present them.
5. What to Expect from Converted
Computer Images