Comments

farss wrote on 2/12/2008, 3:23 PM
Probably using a faster shutter speed when you shot it.
The shutter in the camera is open for a finite period of time. Anything that moves during that time will be recorded as a blur, how much of a blur depends on how fast it moves. How obvious the blur will be depends on how much of the frame the moving object fills.

However if you've shot in interlace and viewing it in the preview monitor you're likely seeing both fields merged. On a TV the amount of blur may be half as much as what you're seeing.

Regardless of the finer points of your situation I seriously doubt it has anything to do with the capture.

Bob.
bob ripperden wrote on 2/12/2008, 3:51 PM
Thanks Bob, for your reply....It does have the blur on a TV as well...I'm shooting with a jvc camcorder into my computer. I did think about the shutter speed and tried other settings but got the same results. I tried the same camera with Final Cut Pro and everything is alright.
Anything else I should try?
Thanks.
Jessariah67 wrote on 2/12/2008, 7:22 PM
Somebody with a deeper camera BG will probably correct me, but in the still world, shutter speed knocks down the amount of movement that can occur while the film is exposed, thus knocking down the amount of blur you will get. But in video or film, you are still having to deal with a set amount of "stills" per second - be it 60 halves, 30 or 24, so stepping up the shutter speed is only going to make the motion more jittery or strobing, instead of blurred (like the beach scene in Saving Private Ryan), so you aren't going to improve the "clarity" of the movement by increasing the shutter speed - you're just trading artifacts.

Like I said - I'm sure I'll be corrected, but I think at some point, in a medium with a set frame rate, there is only so "clear" you are going to get the movement - especially fast movement.

Perhaps the interpolation settings in FCP are different from Vegas, and that is why it looks different between the two?

KH
farss wrote on 2/12/2008, 8:28 PM
You're basically correct, in reality with video / film cameras rather than shutter speed, shutter angle gives a better indication of relative blur because it's constant amount of the frame rate whereas shutter speed is fixed.

Anyway if playing the footage back from the camera into a TV gives the same result the conclusion is rather obvious, that's how the camera recorded it and there's no interpolation involved in capturing video, both Vegas and FCP just make a digital copy of what's on the tape, well assuming we're talking DV. FCP might do something different with HDV but even then it's not going to affect this issue.

What will affect this issue is the preview window in FCP from memory shows only one field and with a fast moving object filling most of the frame it'll certainly seem less blurred than it will in Vegas's preview window IF the preview is set to Best/Full. In other words rendered out in FCP and viewed on a TV it should look exactly the same.

You can achieve the same thing in Vegas by changing the Preview window to Preview - Auto. Note at the bottom of the screen it'll say:

Preview ......25p or if you're in NTSC land 30p

Of course unfortunately you're fooling yourself just like you would in FCP, rendered out and viewed on a TV it'll look the same.

Bob.
Terry Esslinger wrote on 2/13/2008, 9:42 AM
Would using a 240fps camera (I believe the HV20 has this ability) create a clearer (less blurry) picture? Not sure about the speed or the camera but its one of that class of cam.
Of course it would be slow motion.
bob ripperden wrote on 2/13/2008, 10:04 AM
thanks to all for your info.

Bob