7D video settings for "action"?

OK, help me out. I know you're supposed to shoot with a shutter speed around your framerate, or doubled right? So 1/30th~1/60th for 30fps? But what about motion blur for your subjects? Also, with the 7D, how to I set the shutter speed once in video mode? It seemed to only let me adjust it in Av in photo mode, then once I flipped the switch it was locked into that value? I could only change the EV with the back wheel, but the top wheel didn't do anything?

here's my sample:
http://www.youtube.com​/watch?v=kfiH9tJkfQg

from 00:17~00:25 I'm holding the camera at a fixed point with cars driving fast across the frame. Any way to make them NOT a blurry mess? Once I panned with them, it solved the problem. Would a faster shutter speed have fixed the blur, but also made the action/motion "choppy"?

Thanks.

just speed up the shutter speed, if you want crisp motion picture that is.

The shutter is out of the picture when you are shooting video.

MT Stringer wrote in post #10627471
The shutter is out of the picture when you are shooting video.

what do you mean?
it uses an electronic shutter, not the stills shutter..

Maybe I am wrong. I thought the mirror was locked up and the shutter didn't work. That shows what I know about my 7D!

MT Stringer wrote in post #10627491
Maybe I am wrong. I thought the mirror was locked up and the shutter didn't work. That shows what I know about my 7D!

Without any kind of shutter, how will video record? haha. The 7D has 2 shutters. the stills shutter is an actual physical shutter while the other shutter, the electronic shutter, is for video.

StructuredAmazing wrote in post #10627506
Without any kind of shutter, how will video record? haha. The 7D has 2 shutters. the stills shutter is an actual physical shutter while the other shutter, the electronic shutter, is for video.

I better keep to shooting stills.

To answer your question Jacobsen, you need to be in M. Anything else will kick the 7D into the Greenbox (auto) while shooting video.
Control your exposure with the ISO after you decide on the DOF you need for the shot.

StructuredAmazing wrote in post #10627506
Without any kind of shutter, how will video record? haha. The 7D has 2 shutters. the stills shutter is an actual physical shutter while the other shutter, the electronic shutter, is for video.

Just for my own edification, can someone please explain this? Short sentences and smaller words would be good, in this case.

I'm still trying to figure out how to make some decent video with my 7D.
I'm only good at stills.

Snydremark wrote in post #10628807
Just for my own edification, can someone please explain this? Short sentences and smaller words would be good, in this case.

Try to think of it as two different cameras snydremark.
One camera is for stills and has the mirror, etc.

The other is a video camera. No mirror or mechanical shutter. It has an electronically controlled shutter that pulses at a certain frequency based on your settings.

FlSHRFun wrote in post #10629061
I'm still trying to figure out how to make some decent video with my 7D.
I'm only good at stills.

It is a different world...isn't it.

To be honest, you can get decent video using the auto setting which is anything other than "M".

Really good video is a lot more complicated and requires a lot of practice.

peter nap wrote in post #10647258
Try to think of it as two different cameras snydremark.
One camera is for stills and has the mirror, etc.

The other is a video camera. No mirror or mechanical shutter. It has an electronically controlled shutter that pulses at a certain frequency based on your settings.

Thanks, Peter. I get that they're two separate functions and all. What I don't quite follow is what an 'electronic' shutter is. And is this the way all video capture functions? Or only on dSLRs?

Snydremark wrote in post #10647336
Thanks, Peter. I get that they're two separate functions and all. What I don't quite follow is what an 'electronic' shutter is. And is this the way all video capture functions? Or only on dSLRs?

I'm really not competent to answer about the technical specs on video Vs DSLR. As far as the image capture, I think they're basically the same. Focus seems to be the biggest difference.

Think of a mechanical shutter as a sheet of photo paper in a box with a hole in it.

put a cover over the hole and no light (Image) enters. An over simplification and a film example but the Image Sensor captures the image instead of light sensitive paper.

The electronic shutter has no moving parts. It's like flipping a switch to power on and off....24, or 30 or 60 times a second.