Re: Color temp of lamps in projection

[P3D Gabriel Jacob <jacob@xxxxxxxxxxxxxx>]

Paul Talbot writes
>I don't think "snap" is really what I am looking for.  Sometimes
>when the viewer button is depressed part way the bulb does not
>light up completely, but that reduced intensity seems to increase,
>not decrease, the golden/orange glow of the scene.  So the effect
>seems reversed with the projector.  Why the difference?

Depressing the button part way reduced the voltage, similiar to the
rheostat that Dr.T mentioned. Doing this reduces the color temperture
and consequently there is more red relative to blue light. Thus,
the reduced voltage would enhance the golden/orange glow. 

Gabriel  



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