Why shoot 24p at 1/48sec shutter?? at DVinfo.net

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Canon VIXIA Series AVCHD and HDV Camcorders
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Old April 14th, 2007, 06:44 PM   #1
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Why shoot 24p at 1/48sec shutter??

What is the advantage/disadvantage to shooting 24p at 1/48sec shutter instead of 1/24?? What will the HV20 let you set for shutter speeds when in 24p mode?

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Old April 14th, 2007, 07:41 PM   #2
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I've been told that it's to emulate a film camera's 180 degree shutter angle.
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Old April 14th, 2007, 07:51 PM   #3
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While 1/24 gives you more exposure and motion blur (which is nice in many cases) 1/48 will look sharper and crisper and more like a "normal" film image. But I've often used 1/24 when I want a little but more motion blur or need the extra exposure.
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Old April 15th, 2007, 03:46 AM   #4
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if you shoot at 1/24 (1/25 for me) with the HV10 it will look progressive
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Old April 15th, 2007, 08:59 AM   #5
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Shorter shutter time will have more effects.

A faster shutter will need to open the aperture a little more, causing less depth-of-field, og out-of-focus blur. With low end camcorders this does not matter much. Needs a bigger sensor / lens.

1/48s will also freeze action better, giving you sharper individual frames.
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Old April 15th, 2007, 09:57 AM   #6
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If you are shooting sports at 24p you probably want less motion blur I would think so you'd want 1/48 or higher, that's one reason.
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Old April 15th, 2007, 10:06 AM   #7
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Keep in mind you can shoot at any of the available shutter speeds (check the manual) in 24p - not just 1/48. Which SS depends on the kind of look you want/specific application. For instance, 1/24 on a static subject will look normal but allow you to shoot in lower light. On a moving subject 1/24 might look soft (and 1/6 or 1/12 blurry). At the fast end, 1/250-1/1000 will create that jittery "Savings Private Ryan" look. Again artistically that may be the choice. But 1/1000 - 1/2000 will definitely cut the amount of light you have hitting the sensor so you'll probably be limited to shooting outside midday.
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Old April 15th, 2007, 10:32 AM   #8
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Good point Peter. I shot 24p 1/100 light saber footage this weekend because for one you can clearly see where the blade is as opposed to a nebulous blur, but also it gives you that life action Private Ryan studdery effect.
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