ALL: Shutter speed question

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ELN614

Well-known member
there was no general forum section for this so I put it here.. since this is what camera I am using.

I don't usually shoot out of 1/60 (based on my type of work) So don't laugh when I ask this question.
When shooting 60i (or 60p) ... does it matter if I use 1/100 or 1/120? I have myself second guessing that 1/100 is for 50i shooters. But in reality it should not matter.
Has anyone played around with 1/100 and 1/120 to see if it really matters?
I wanted toclean up the image (with a faster shutter speed) but if you go too far is makes it seem a little unnatural, in the motion, of the subject being shot.

thanks!
 
It's a very minor difference. 1/120 will be a little tiny bit darker, a little bit "crisper". But where it can really matter is if you're shooting under 60Hz fluorescents or magnetic-ballast HMIs. If you choose 1/100 when shooting 60i/60p, you can get scrolling bands in your footage on a CMOS camera, and you can get a slow gradual color shift on a CCD camera.

Under daylight, no big deal, use whatever you want. Under tungsten, no big deal, choose whichever gives you the look you want. But under magnetic fluorescents or HMIs, use multiples of your power line frequency (1/120, 1/60, 1/40, 1/30, or 1/24, whichever is appropriate).
 
Indeed, quicker shutter speeds tend to introduce strobing. Here's a answer to a question you didn't ask: If you anticipate stabilizing you footage in post, faster shutter speeds will produce a much more pleasing image, as you won't get the motion blur in the stabilized video. The following is a demo video I made some time ago (with a Panny TM700).


...Jerry
 
One cuestion. I live in Spain and here the system frequency is 50Hz. When I record in 50p I can only choose 1/120, I can't choose 1/100. Is this a problem?Thank you.
 
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