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VR not activated when using the AF-ON button on a MB-10

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Stephen Porten said:
Thanks for all of the information. I now have a much better understanding of operation of the buttons.

The manual for my 200 - 400 VR says the same thing but I must have overlooked the note.

So to get the full benefit of VR I should pause 1/2 way when I push the shutter release.
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According to my experience VR is very fast. I normally don't pause half way down since I have focus priority set so the camera is not taking an image if the target is not in focus. My experience is that the target is not in focus if VR is not ready, so I have not felt the need for any pause yet. What I mean is that VR is not active unless you press the shutter release half way, but even though it takes some time for the VR to be activated I don't think that time is longer than a tiny fraction of a second, maybe 100ms or even less. How long it takes for the lens to stabilize also depends on how stable you are holding the camera and which lens it is.
 
MiJoCa said:
Thanks for that info. I was about to buy an MB-10, but as I rely on VR (age you know) I will give it a miss and spend money on another lens.
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Even if you use AF-ON to focus, you can't take a photo without using the shutter release, so VR is still activated!

--
--Bob
 
Sandozer said:
Permanently engaging VR on the AF button would be a much increased drain on battery power.
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It would better be described as "a almost immeasurably minimal increase in battery usage that will almost certainly go unnoticed." I shoot plenty of AF-C shots using AF-ON and I almost always have the shutter half-pressed to keep VR going for seconds/minutes at a time. It makes absolutely no practical difference in battery life.
 
squeamish said:
olyflyer said:
squeamish said:
Robert Cohen said:
Even if you use AF-ON to focus, you can't take a photo without using the shutter release, so VR is still activated!
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No, you can press the button quickly enough to fire the shutter without using VR.
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Yes, but then the VR must be switched off on the lens.
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You can stab the shutter button fast enough to take a shot before VR has any effect.
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Yes, definitely. But the VR is activated as soon as you push the button and how fast it has any effect depends on many things, lens, focal length, camera, you... But yes, just like the AF, if you are too fast the VR may not be able to stabilize the image.
 
Dave Courtenay said:
I think this is something that Nikon needs to make available to Nikon users, You can use it on Canon cameras why not Nikon?????????
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If VR was activated by the AF-ON button, you would quickly run down the battery when using continuous or follow focus.

When all else fails - read the instructions.
 
Vic Chapman said:
Dave Courtenay said:
I think this is something that Nikon needs to make available to Nikon users, You can use it on Canon cameras why not Nikon?????????
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If VR was activated by the AF-ON button, you would quickly run down the battery when using continuous or follow focus.

When all else fails - read the instructions.
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Correct,

Actual current measured....

Nikon 80-400mmVR fitted VR on

Camera ON, power surge of 185ma for approx 3 seconds, then back to .8ma
Shutter lightly depressed, 225ma then return to .8ma

AF depressed 390ma during focus movement in the lens, stays at 185ma when holding AF button on.

Nikon 18-200mmVR (mk1) VR on

Camera On, power surge of 210ma for approx 3 seconds, then back to .8ma
Shutter lightly depressed, 210ma then return to .8ma

AF depressed 400ma during focus movement in the lens, stays at 212ma when holding AF button on.

If saving battery power is important, then switch camera on and leave ON, dont unnecessarily press shutter or AF buttons, anything that activates the metering pulls a surge of current.

--
Ian.

http://www.flickr.com/photos/sandozer
 
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