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High Speed lit with HMI


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#1 Matthew Wilson

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Posted 12 November 2008 - 01:37 PM

Evening everyone,

Just been making a plan for lighting a 1000fps shoot, shooting on a phantom. We're lighting with tungsten heads and Ihope( touch wood) everything is in hand. I'm curious, has anyone done a shoot like this using daylight lamps, if so, what issues with flicker etc and anything else that came up.
Only asking because someone mentioned in passing they'd had problems but didn't really elaborate.

Cheers
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#2 Stephen Williams

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Posted 12 November 2008 - 01:45 PM

Evening everyone,

Just been making a plan for lighting a 1000fps shoot, shooting on a phantom. We're lighting with tungsten heads and Ihope( touch wood) everything is in hand. I'm curious, has anyone done a shoot like this using daylight lamps, if so, what issues with flicker etc and anything else that came up.
Only asking because someone mentioned in passing they'd had problems but didn't really elaborate.

Cheers


Hi,

HMI's will flicker, the sun is better ;) Any tungsten units less than 5k will flicker as well

Stephen
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#3 Stephen Price

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Posted 12 November 2008 - 02:41 PM

I know for certain 5K, 10K and 20K Tungsten and Vista Beams have no flicker issues.
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#4 Kevin Zanit

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Posted 12 November 2008 - 08:42 PM

As was said, large tungsten is a safe option (5k and bigger). One thing to think about is the Phantom is daylight balanced, so some correction either in the form of camera filter, gel or post work will be needed. Obviously color correcting the light or using a filter is a considerable hit in light output, but leaving it all to post can introduce some noise as well.

HMIs are hit or miss, but as a general rule I'd try and avoid them when possible. They will flicker, but with enough heads, distance and diffusion the flicker is minimized. I have seen good things with 25k and 50k Softsuns though, no flicker issues.
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