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Figure 3-2. An example of color shifted due to convergence misalignment
Resistant to magnetic fields
CRT color reproduction can be affected by
terrestrial magnetism. This is because CRT beam
paths can react to even weak magnetic fields,
causing a shift in where the R, G, and B beams
land on the phosphors.
A typical example of this effect can be observed
when using a perfectly aligned CRT monitor in an
OB van. OB vans can be parked in different
directions, which can change the effect of
terrestrial magnetism. If the van is parked in a
Figure 3-3. The affect of magnetic fields on a CRT
LCD Benefits in General
different direction from when the CRT was
aligned, a color shift will be seen in the four
corners of the screen. The larger the CRT screen,
the larger the color shift. Needless to say, a
similar effect will be seen when placing a CRT
close to any device that produces a magnetic
field, including large speakers.
As with convergence, LCD displays are
completely free from terrestrial magnetism effects
since they do not use beams.
Product Information Manual Sony Professional LCD Monitor
17
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