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Flicker Shooting Red in Europe


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#1 Travis Cline

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Posted 17 June 2009 - 11:30 PM

What do you guys think is the best solution for shooting with the Red in Europe and to not get flicker? When shooting 50Hz is it better to adjust frame rate, shutter angle, etc.? What are people doing? What have you done? Thanks all, I appreciate your responses. So informative and helpful.

Travis
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#2 Dimitrios Koukas

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Posted 18 June 2009 - 02:55 AM

What do you guys think is the best solution for shooting with the Red in Europe and to not get flicker?

Travis


Hi,
By just using 25Fps/ 172.8 Shutter will solve your problem in most cases, be sure the sound enginneer does the same too, (if you don't recording sound on RED) it will save you some Post production.
The good thing with video cameras is that you can check the flicker . If you are in a place with industrial or home fluorescent lights, try not to use more than 50Fps. They won't exactly flicker but the light will go down and up in periods.

I believe by just using Normal operating mode for your shutter will do.

Mode: enables one of three following shutter modes. Default selection is Normal.

Normal: Shutter Speed is defined exclusively by the Shutter Speed setting.

Syncro: Shutter Speed is defined by Shutter Speed, but modified by Syncro setting.

Relative: Shutter Speed is defined by Shutter Speed, but modified by the capture fps.

To Convert Shutter Speed to Angle Equivalent:
Equivalent Degrees = (Shutter Speed x Frame Rate x 360)
E.g. = (1/48 x 24 x 360) = (8640 / 48) = 180
Shutter Degrees Shutter Degrees
1/32 270 1/120 72
1/48 180 1/192 45
1/50 172.8 1/348 22.5
1/60 144 1/696 11
1/96 90 1/1000 8.6


To Convert an Angle to an Equivalent Shutter Speed:
Equivalent Shutter = 1 / ( Frame Rate x 360 / Angle )
E.g. = 1/ (24 x 360 / 180) = 1/ (8640 / 180) = 1 / 48
Degrees Shutter Degrees Shutter
270 1/32 72 1/120
180 1/48 45 1/192
172.8 1/50 22.5 1/348
144 1/60 11 1/696
90 1/96 8.6 1/1000

I hope this helps.
Dimitrios Koukas
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#3 Travis Cline

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Posted 18 June 2009 - 11:14 PM

Thank you so much Dimitrios, that was very helpful and reassuring. I appreciate your help.

Travis

Edited by Travis Cline, 18 June 2009 - 11:14 PM.

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