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 Post subject: Using IS with a bean bag
PostPosted: Mon Feb 11, 2013 12:21 pm 
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Joined: Fri Jun 22, 2012 8:42 am
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Location: Almere, The Netherlands
Hi guys,

Was wondering the following: when using a bean bag, or stabilizing your camera on a window, should you still use your IS or will the IS cause unsharp pictures? The lens I am using has an older kind of IS: a 100-400/4.5-5.6 L IS USM. Still trying to get the best out of my gear, and just don't know all the details and quirks of this new lens yet.

Thanks!

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PostPosted: Mon Feb 11, 2013 12:59 pm 
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Good question, it's something i've wondered about from time to time.

If you're using speeds above 1/400th sec you probably won't need IS anyway, but at much slower speeds I guess it is still useful, unless it's `rock solid`& there's no chance of movement to cause blur. (which even pressing the button can easily do)

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PostPosted: Tue Feb 12, 2013 11:44 pm 
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Nobody has an idea? :(

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PostPosted: Wed Feb 13, 2013 4:04 pm 
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I know one is supposed to turn IS off when using a tripod, but it might be different with a bean bag. The latter doesn't necessarily eliminate all movement of the camera, so a little IS might help. Can you test it? Take the same shot with identical settings, one with IS, one without (using the self-timer I suppose), and then compare the sharpness of both images.

- Bjorn

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PostPosted: Wed Feb 13, 2013 4:10 pm 
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Joined: Fri Jun 22, 2012 8:42 am
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Well I can try this the next time I am going out with the 100-400 + bean bag, but I was kinda hoping I did not have to test it myself. :P

Could mean I will use the wrong setting when a great moment just happens to go down while testing. Ergo: I end up with a crappy picture which otherwise might have been awesome. So I will just have to hope nothing very interesting happens next time I go out :P. Chances are very large that nothing happens either way: nature photography sure tests my patience well...

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Cameras: Canon EOS 7D, Canon EOS 40D
Lenses: Canon EF 17-40/4 L USM, Canon EF 24-105/4 L IS USM, Canon EF 70-200/2.8 L USM, Tamron SP 150-600/5-6.3 Di VC USD, Canon Extender 1.4x II
Want list: Canon EOS 5D Mark III, Tamron SP 90/2.8 VC USD Macro, Canon EF 500/4 L IS USM, Canon Extender 2.0x III
Flickr: http://www.flickr.com/photos/mtkoopmans/
Website: http://www.mtkfotografie.nl


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PostPosted: Wed Feb 13, 2013 7:56 pm 
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Haha yeah, shooting birds/wildlife can be so frustrating sometimes.
If in doubt, I'd just leave it switched on tbh.

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Nikon D800E & D700 bodies + Nikon 200-400mm F4 VR1, 50mm F1.4G, 16-35mm f/4G VR, 105 F2.8 VR macro, 70-300mm lenses. A couple of filters, Giotto tripod & ballhead. Lowepro Slingshot 302 AW
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PostPosted: Thu Feb 14, 2013 8:06 am 
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Joined: Fri Jun 22, 2012 8:42 am
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Location: Almere, The Netherlands
Same here, but what if that would cause the picture to be less sharp instead of sharper? That would kinda be what I am trying to avoid :P.

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Cameras: Canon EOS 7D, Canon EOS 40D
Lenses: Canon EF 17-40/4 L USM, Canon EF 24-105/4 L IS USM, Canon EF 70-200/2.8 L USM, Tamron SP 150-600/5-6.3 Di VC USD, Canon Extender 1.4x II
Want list: Canon EOS 5D Mark III, Tamron SP 90/2.8 VC USD Macro, Canon EF 500/4 L IS USM, Canon Extender 2.0x III
Flickr: http://www.flickr.com/photos/mtkoopmans/
Website: http://www.mtkfotografie.nl


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PostPosted: Thu Feb 14, 2013 2:56 pm 
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Couldn't you test it out a window at your home? Shoot at something that's at a similar distance as your regular subject with the beanbag resting on a windownsill and run the experiment. I would do it for you but I don't have a beanbag, a telephoto lens, or IS for that matter. :)

- Bjorn

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