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24p-180degree shutter
Our HDX900 has a shutter setting for “half”. Would someone please explain the practicle value of using this? Also, when I set the camera to 24p does it automatically set the shutter to 180 degrees?
I appreciate any advice anyone can offer.Thanks!
Mark
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3 Replies
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The HALF setting is synonymous with a 180 degree shutter–and is thus a very useful feature. Exposure time is half the reciprocal of fps, so at 24fps HALF yields a 1/48 shutter, at 60fps HALF yields a 1/120 shutter.
If you have the shutter turned off in 24p, then the exposure time will be 1/24 of a second (360 degree) which gives you way too much motion blur for most circumstances.
Evan McIntosh
McIntosh Productions LLC
Atlanta, GA
HDX900 owner/operator -
Definitely use the half-shutter when shooting 24. Without it, you get way too much blur. True film cameras do the same thing as the mirror rotates when exposing.
I also use half when shooting 30 fps if you are getting too much blur. It also helps tremendously when you shoot blue screen.
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Evan and Santellavision,
Great answers. Thanks for responding so quickly. We shoot a lot of 16mm so I understand the relationships. Knowing that turning on the shutter to half will reduce blur is great info! I’ll definitely test this one out.
Thanks again!
Mark
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