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PostPosted: Wed May 30, 2012 10:57 am 
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Joined: Wed Jul 13, 2011 11:34 am
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Hi all
I tend to get shutter speeds of nearly 1/2000 when out and about, and I have seen the debate should you use VR at these speeds?
When do you start to use it?

Thanks

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PostPosted: Wed May 30, 2012 11:52 am 
I'm no expert but I wouldn't think VR is required at that shutter speed. The idea of VR is mainly for hand held when the shutter speed is dropped below say 1/30th of a second. That is not always the rule though, the VR normally allows you to drop down a few stops in shutter speed whilst hand holding the camera. I believe the general rule of thumb is whatever the focal length then that should be about the shutter speed (if you are at 125mm then shutter should be 1/125th second), please correct me if I am wrong. I normally don't use VR for things like sports or anything that requires a fast shutter as it is no point. If you are slowing down the shutter and holding the camera to very slow speeds and don't have a tripod then you need to use VR to avoid camera shake. If you put your camera on a tripod then VR should always be turned off.


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PostPosted: Wed May 30, 2012 12:55 pm 
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Joined: Sun Jul 04, 2010 4:52 pm
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Location: NB, Canada
It mostly depends on which focal range you shoot at, but with my 70-300, I find the VC quite useful for focusing shots. At 300 x1.6 = 480mm, I find the image moves around too much to focus and compose my shots correctly, so even if I shot at 1/4000, I would still put my VC on.

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PostPosted: Wed May 30, 2012 6:46 pm 
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Joined: Sun Nov 05, 2006 11:08 pm
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Location: Germany
I have VR always on although I doubt it is useful beyond 1/1000 sec, because the speed/frequency with which to move the glass in the VR-section of a lens is certainly limit. Otherwise the energy-consumption would be too high.
But surely you profit from the more stable viewfinder-image.
And perhaps (I've not read anything about it) the AF can acquire focus better with a stabilized image than with a non-stabilized image

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PostPosted: Thu May 31, 2012 1:08 am 
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Joined: Thu Jan 26, 2006 10:41 pm
Posts: 366
This is interesting. I read (somewhere) that some high shutter speeds actually might be blurry, depending on the frequency of VR measurement and adjustment.

But my brain can't get through all the variables here.

I leave my VR on and get very clear images at all speeds, though I do turn it off for tripod use. For my 70-300, it's pretty well essential on anything but the brightest days.

I once did a rather amateur comparison of VR and non-VR on a tripod with the 16-85 and it seemed that non-VR was a little clearer at a pixel level (at shutter speeds around 1/30 second), though the tiny difference could have been included in focussing errors etc.

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