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[filmscanners] Re: CRTs vs LCDs
Dave king asked:
>But you seem to be saying that the bias setting is more critical than the
>gain setting. So if you and ColorVision are both correct, then factory
>setting for bias is fine to use, and presumably there isn't as much drift
>here because phosphor aging isn't an issue in the black tones?
The blacks need to be neutral before the whites are adjusted. There is
circuitry around these days that senses CRT beam current during blanking
periods (black) and adjusts things to keep the blacks neutral. This is used in
TV sets, so it probably is in computer monitors as well.
Any drift here is caused by electron gun, rather than phosphor aging.
Colin Maddock
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