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Paul Tackett

High-speed lighting

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Hello I'm lighting for 1000 fps. In the equation I originally compensated for shutter speed but I believe the following is now correct using shutter angle if you could please help if you know.

 

I used the equation: 100asa at 180degree shutter, 24fps = 100fc at 2.8

 

For high speed I got: 800iso, 180degree, 998.4fps = 520fc at 2.8

 

Do I need to compensate for shutter or is this correct? Thank you

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With this in mind a 12k Big EyeSolorspot at full spot at 20 is 5900fc & 950fc full flood. Factor in diffusion cutting at least by half I'm thinking I could probably do medium spot and have exposure with one unit on the back edge

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1000 fps is something like a 5+ stop loss compared to 24 fps, and going from 100 ISO to 800 ISO is a 3-stop gain, so you need another 2-stops of exposure, so a bit more than 400 fc instead of 100 fc? So your 520 fc might be right, off the top of my head...

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Another question regarding this. Can a skypanel with the 3.0 update shoot flicker free at 1000 fps? Considering using a couple s60's and getting more top down light.

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