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Old February 12th, 2010, 06:28 AM   #1
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Change in Color Temperature

I have bought some lights that are giving around 5500 K on full power.
I also bought a dimmer so now I can control the power of the lights.
Is it normal that when I go from full power (white lighting) to a very orange-yellow lighting
when I dim those lights ? It seems they go to a 3200 K but I'm not sure.
The lights were quite cheap so maybe that is the reason of its change in Color temperature ?
Does it happen also with the more expensive lights ?
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Old February 12th, 2010, 08:38 AM   #2
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What type of lights are we talking about?
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Old February 12th, 2010, 09:32 AM   #3
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Those redheads look-a-like from China I guess. ;)
I have used them a lot and they have helped me out big time, but
it's just when dimming them they will change in color.
I haven't worked with other expensive lights, so I don't know if it happens
aswell.
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Old February 12th, 2010, 01:32 PM   #4
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Yes, incandescents always warm up when dimmed to lower output.
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Old February 13th, 2010, 09:32 AM   #5
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I agree with Adam here.
A possible solution is to scrim the lights rather than dimming them.


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Old February 13th, 2010, 10:27 AM   #6
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Any way to avoid dimming - ie ND filters/gels on the lights, lower wattage bulbs, different F-stop/shutter speed, etc etc.
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Old February 14th, 2010, 05:31 PM   #7
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Quote:
Originally Posted by David W. Jones View Post
I agree with Adam here.
A possible solution is to scrim the lights rather than dimming them.
Al the Best!
So you mean, I just have to use them full power so I have the correct color temperature, but then instead of shining directly onto the subject (what is way too bright), I would have to put something in between ? for example a large bedsheet, or shine to the other side and try to reflect that light.
Right ?
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Old February 14th, 2010, 07:12 PM   #8
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You could do that, or as I suggested you could use scrims.
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Old February 15th, 2010, 01:02 PM   #9
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Quote:
Originally Posted by Bart Wierzbicki View Post
So you mean, I just have to use them full power so I have the correct color temperature, but then instead of shining directly onto the subject (what is way too bright), I would have to put something in between ? for example a large bedsheet, or shine to the other side and try to reflect that light.
Right ?
It depends what you want to do with the light. If you want hard light, you use scrim or use ND gels on a direct light. If you want softer light you bounce it off a white surface or through a diffusion filter eg 216 or a diffusion frame ( you can hang your white bed sheet for this).
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