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HMI & CTO


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#1 Nick Centera

Nick Centera
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Posted 27 January 2012 - 04:07 AM

Hey, I am going to be shooting an outdoor, on location, night scene. I will be shooting on 35 tungsten and was wanting to use HMI's to help with gaining most of the moonlight and also for the higher output of light. I do not want the scene to be completely blue so I was thinking of putting a slight CTO, maybe a 1/4 to help reduce the blue. I have read that it is pretty inefficient to CTO HMI's but I am not someone who likes to "fix it in post." Please let me know your thoughts. Thank you

Nick
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#2 M Joel W

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Posted 27 January 2012 - 01:50 PM

1/4 CTO should eat almost no light. I think 3/4 CTO (which brings HMIs to 3200K) eats maybe 2/3 stop? Way less than CTB.

If you're lighting ONLY with HMIs, this seems like something you could do in post very easily. There are other colors you could use, too. I forget what they used in Pan's Labyrinth but I think it was some sort of green/teal gel? Could be totally wrong but that looked great. HMIs vary pretty significantly in color temperature so you could easily have one at 6000K+ and another around 5000K. So some might need more CTO (and possibly some minus green) than others.

Edited by M Joel Wauhkonen, 27 January 2012 - 01:51 PM.

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