XF300 shutter question

[Chris Stevens]

If one has the shutter control turned off, what shutter speed is used when in 720 50P mode? Does the camera use the double shutter speed rule for each mode, i.e. 25P 1/50th, 50P 1/100th etc?

[Jerry Laurence]

I think, if you don't set a shutter speed, it's on Auto so it could be anything the camera chooses. Perhaps someone could confirm this?

[Chris Barcellos]

Thats my understanding about shutter off in most cameras. You are actually putting it in auto mode.

[Doug Jensen]

No, that is incorrect.
If you turn off the shutter, then it defaults to whatever the frame rate is.
For example, 1/30 for 30P, 1/24 for 24P, etc.

MASTERING THE CANON XF305 & XF300 CAMCORDERS

Hope that helps.

[Chris Barcellos]

I stand corrected.

[Lee Mullen]

When shutter is off, it is off. I recently shot some fast action sport with it switched off and there was no motion judder or lag.

[Doug Jensen]

There is really no such thing as shutter "off" on a video camera even though there is a switch on the side of the camera says "off". Shutter is always being used. As I said before, when the shutter switch is in the off position then the shutter speed defaults to whatever the frame rate is. You can call that "off" if you want to, but there is still an electronic shutter being used at all times.

[Doug Jensen]

Originally Posted by Jalan Salur

When shutter is off, it is off. I recently shot some fast action sport with it switched off and there was no motion judder or lag.

I don't know what you mean by "motion judder or lag", but there had to be plenty of motion blur in every frame you shot. You may not have minded it, and it may have looked okay to you, but I guarantee that the motion blur was there nevertheless.

With the shutter off, the speed is going to be 1/24, 1/30, or 1/25. There is no way you can shoot fast action sports at those shutter speeds and not get blur. Anyone who has shot sports photos with a still camera would agree there is blur at slow shutter speeds. In fact, I won't even use those shutter speeds for talking heads or interviews. In my opinion, Shutter Off is too slow for anything that has motion it it.

[Lee Mullen]

Originally Posted by Doug Jensen

I don't know what you mean by "motion judder or lag", but there had to be plenty of motion blur in every frame you shot.

NO there was not

[Jim Michael]

Interesting. I'd love to see a still frame.

[Doug Jensen]

So would I. There is no way you can shoot action sports with a shutter under 1/25th and not get motion blur. It is simple physics. Let's see some clips.

[Tom Roper]

If he is shooting 60i interlaced then shutter off is 1/60th, perfectly reasonable for action shooting.

[Lee Mullen]

Originally Posted by Jim Michael

Interesting. I'd love to see a still frame.

I am unable due to copyright.I guess you'll have to take my word for it.

[Lee Mullen]

Originally Posted by Tom Roper

If he is shooting 60i interlaced then shutter off is 1/60th, perfectly reasonable for action shooting.

I shot 720 50p

[Tim Polster]

Wow Jim & Doug, no reply with even a little apology? Not a big deal but seems kind of harsh and non-DVInfo like to call somebody out when it is your oversight.