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How does changing shutter speeds affect video?
I recently discovered that my Sony DSR-250 shutter speed was set to Auto. This created problems in some lighting situations (see Shutter Speed and Video Hue post). When using manual shutter speed, I have always used 1/60. But I wanted to be sure this is a good choice for this camera. In order to make a good decision, I need to know the basics of how shutter speed affect video. I notice that changing it makes the video brighter or darker. Are there any other things I should know?
Thanks
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3 Replies
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Carl,
1/60 is a good shutter speed for most video. Faster speeds can help you achieve a more shallow depth of field, useful for rack focus effects which can help video look more film like.
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1/60 is correct for NTSC.
As you increase the shutter speed above 1/60, motion (action) viewed in standard-speed playback can take on a sort of “crisp” or “staccato” unnatural look.
It can help the image clarity if you intend to use slow-motion effects for the shot, but at standard speed, there is a noticeable “effected” look. This becomes more apparent as you set the shutter for “shorter” (higher numbers) exposures.Sometimes you’ll see this effect used (primarily with film cameras, in this case) in Action Scenes in films and TV shows.
If you like it for effect, use it. Otherwise stick with the 1/60 “normal” shutter for NTSC video.If you have 1/30 or slower shutter settings, that can very much increase the “light-gathering” properties allowing for much brighter images in MUCH lower light conditions.
BUT, at the severe EXPENSE of image MOTION.
So, any shutter speed below 1/60 can act as a motion “strobe” where each frame is “frozen” slightly and the motion takes on a “stop-and-go” appearance. -
Ok… Here’s a question that I have. I’m using the Sony HDV Z1 cameras and have them set to Cineframe30 for the 30p film look. Do I run those cameras at 1/30 or 1/60?
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Wayne Carey
Schazam Productions
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