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different wattages of tungsten

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noor hussain
different wattages of tungsten
on Oct 31, 2010 at 3:35:56 pm

how do different watts of tungsten affect the light.does it effect the color temperature


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john sharaf
Re: different wattages of tungsten
on Oct 31, 2010 at 3:48:12 pm

Wattage of the globe does NOT affect the color. Voltage does. That is why a dimmer makes the color of the light "warmer" as you lower the voltage by adding resistance. Also if you use extremely long extension cords, the cumulative resistance makes the light burn with a warmer (redder) color. Photo grade globes are constructed to burn at 3200K which is the nominal color of most color films and video imagers in preset color balance mode.

You can also purchase 2900K globes to fit many lighting fixtures. These globes will have much longer burn times and are therefore preferred for use in architectural or display settings (think department store windows). The human eye adjusts to make white look right, on film these globes will be slightly warm, which might be a good thing if that is your intention.

JS



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noor hussain
Re: different wattages of tungsten
on Oct 31, 2010 at 4:18:32 pm

thankyou sir
so the wattage determines the range and strength of the light only?


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john sharaf
Re: different wattages of tungsten
on Oct 31, 2010 at 4:25:43 pm

To be technically correct, in addition, the wattage also determines the current draw (amperage) which must be calculated in order to not "blow" fuses or to "balance" the load when running on a generator.

JS



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