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PostPosted: Thu Jul 19, 2007 1:49 pm 
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People probably already know this but as I didn't, I thought I'd post a thread about it anyway in case anyone else is in the same boat as me.

The battery was running low on my D80 and I was playing around with it on shutter priority set to 1/200. I noticed that with VR enabled the shutter speed was actually noticeably slower than if I switched VR off (at a guess of the sound, probably around 1/50 or so). It makes sense if you think about it, as the battery has to drive the VR motor but it wasn't something I was expecting. I would've expected the camera to draw as much power as it needs for full operation and then just die.

I plan to run some more tests to see exactly at what level this drop in performance occurs.

Has anyone else noticed this with their D80 + VR lens? I assume it's normal...?

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PostPosted: Thu Jul 19, 2007 6:25 pm 
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Nope! I never let my batteries run that low...

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PostPosted: Fri Jul 20, 2007 7:12 am 
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I tested this a bit more last night and the slower sounding shutter, with VR on, started to occur when the battery indicator had 3 bars (of the 5) left. I wouldn't say that this constitutes a low battery.

My first thought then was "is this effecting exposure?". I set the camera to shutter priority 1/1000 with no flash and took a picture of a ceiling light in my front room - once with VR on and once with VR off. Again, the shutter sounded significantly slower with VR on but the actual result of both images looked virtually identical (I'll post some samples when I get home from work).

When you get a chance, can anyone with a D80 and a 18-200VR lens try this out themselves and let me know what you find? I'm really not sure if this is normal operation or if there's something up with my lens/camera.

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PostPosted: Fri Jul 20, 2007 7:33 pm 
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first have to run my battery down...

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PostPosted: Sun Jul 22, 2007 12:15 pm 
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Ok, well it seems I'm not alone. Other people have had the same experience and it certainly looks tied specifically to the D80 and VR lenses. Everyone else also reports that there's no change in the *actual* exposure of the photos so I guess it's not a problem as such. just a funky quirk.

http://www.nikonians.org/dcforum/DCForumID236/2586.html

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