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Avoiding HMI Flicker


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#1 Ronnee Swenton

Ronnee Swenton
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Posted 15 November 2013 - 01:53 AM

Hey guys,

 

I've been doing some research to avoid any flicker issues I may have with my magnetic HMI's.

 

So far, from what I've gathered throughout searching these forums and elsewhere, I've come to this conclusion:

 

I should run my 1200 magnetic HMI on a Honda EU Inverter genny (thanks Guy for the article) to avoid fluctations in hz. This will give me a very acurate 60hz cycle. My camera's shutter should then be set to 1/60 to prevent any possible rolling flicker.

 

At this point, a few last questions I have are whether or not I would benefit from using 24fps rather than 23.976. Is this redundent if my shutter is set at a definitive 1/60 (as opposed to an angle equivalent)? Will 24fps avoid timecode sync errors (assuming all devices are synced correctly)? and in your personal experiences is a 1/60 shutter less appealing than the standard 180 degree or 1/48 shutter?

 

My end format will be 23.976 HD for television. I understand there will be a minor speed change in editing, and I'm fine with that if it saves trouble in production.

 

Thanks again,

Ronnee Swenton


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