[opendtv] Re: Europe now debates i vs p
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sun, 12 Sep 2004 17:16:20 -0400
Doug McDonald wrote:
>If by "10k" you mean 10 kilowatts, yes, they won't flicker much.
>
Yes, that's what I mean.
>Higher power bulbs flicker less than than lower power ones, and
>high color temperature bulbs flicker more than lower color
>temperature bulbs.
>
Typical studio lighting is 1k 3200K bulbs.
>If you are using very high power incandescents,
>the 50-60Hz problem won't be noticeable. Are TV studios lit with
>incandescents, or with (DC) Xenon arc lamps?
>
Rare to find arc lamps. Tradition is incandescent (which would have
likely been the case in the studio that started this thread). These
days, there's also a fair amount of high-frequency fluorescents.
Discharge lamps are more common in the field, where high-frequency
and/or square-waves are used to get around flicker issues.
TTFN,
Mark
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