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?

Thanks!!

I've been told that it's to emulate a film camera's 180 degree shutter angle.

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.

if you shoot at 1/24 (1/25 for me) with the HV10 it will look progressive

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.

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.

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.

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.