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Metal Halide with Electronic high freq "ballast"


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#1 Henri Titchen

Henri Titchen
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Posted 13 June 2005 - 06:37 AM

Hi,

I've been wondering if anyone here is using metal halide's?? They seem like relatively inexpensive solution.

I was thinking of a 150W halide with an OSRAM Powertronic ballast for film use.

Here is a link which seems to indicate that this is possible.
Link to article on CDMH lights

Henry.
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#2 Phil Rhodes

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Posted 13 June 2005 - 01:29 PM

Hi,

There's plenty of this kind of stuff around; I own a couple of 150W MSRs which sound similar. Most MSR/MSD lamps are about 4000K and have reasonable CRI, and I've shot both video and film stills under them without noticing enormous problems. The cold restrike is a pain, but other than that, it's a cheap discharge lamp - what d'you want?

Check that the ballast is actually HF and not just "electronic" - the terms are not always synonymous. If they won't hot restrike, that's another pointer that they're just iron ballasts. Mine won't.

Phil
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