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Canon XF Series HD Camcorders
Canon XF305, XF205 and XF105 (with SDI), Canon XF300, XF200 and XF100 (without SDI).


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Old August 16th, 2012, 06:25 AM   #1
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XF300 shutter question

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?
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Old August 16th, 2012, 01:21 PM   #2
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Re: XF300 shutter question

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?
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Old August 16th, 2012, 03:19 PM   #3
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Re: XF300 shutter question

Thats my understanding about shutter off in most cameras. You are actually putting it in auto mode.
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Old August 16th, 2012, 08:45 PM   #4
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Re: XF300 shutter question

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.
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Old August 16th, 2012, 10:36 PM   #5
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Re: XF300 shutter question

I stand corrected.
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Old August 19th, 2012, 06:58 AM   #6
 
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Re: XF300 shutter question

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.
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Old August 19th, 2012, 08:50 AM   #7
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Re: XF300 shutter question

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.
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Last edited by Doug Jensen; August 19th, 2012 at 01:38 PM. Reason: Fixed a typo
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Old August 19th, 2012, 01:47 PM   #8
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Re: XF300 shutter question

Quote:
Originally Posted by Jalan Salur View Post
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.
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Old August 19th, 2012, 10:19 PM   #9
 
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Re: XF300 shutter question

Quote:
Originally Posted by Doug Jensen View Post
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

Last edited by Lee Mullen; August 20th, 2012 at 04:54 AM.
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Old August 20th, 2012, 06:07 AM   #10
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Re: XF300 shutter question

Interesting. I'd love to see a still frame.
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Old August 20th, 2012, 06:29 AM   #11
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Re: XF300 shutter question

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.
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Old August 20th, 2012, 11:11 AM   #12
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Re: XF300 shutter question

If he is shooting 60i interlaced then shutter off is 1/60th, perfectly reasonable for action shooting.
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Old August 20th, 2012, 10:57 PM   #13
 
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Re: XF300 shutter question

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Originally Posted by Jim Michael View Post
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.
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Old August 20th, 2012, 10:59 PM   #14
 
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Re: XF300 shutter question

Quote:
Originally Posted by Tom Roper View Post
If he is shooting 60i interlaced then shutter off is 1/60th, perfectly reasonable for action shooting.
I shot 720 50p
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Old August 27th, 2012, 11:23 AM   #15
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Re: XF300 shutter question

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.
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