(Roughly) How long of an exposure would I get on my 650D?
I might try some start trails later this summer.
DanKearley Senior Member 426 posts Likes: 32 Joined Aug 2012 More info | May 28, 2013 19:50 | #1 (Roughly) How long of an exposure would I get on my 650D?
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JohnfromPA Cream of the Crop 11,258 posts Likes: 1527 Joined May 2003 Location: Southeast Pennsylvania More info | May 28, 2013 20:57 | #2 Under conditions of a new moon, and full star track circles, you need an exposure around 90 minutes and a battery in good shape and fully charged should be able to deliver. Obviously have the screen off. In cold weather 90 minutes might be a stretch. With anything in the way of a sliver of a moon or more, exposure will be down around 10 to 15 minutes. Anything more than that and the sky will blow out; likewise with any street or ambient light from a shopping center or housing development.
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JohnfromPA Cream of the Crop 11,258 posts Likes: 1527 Joined May 2003 Location: Southeast Pennsylvania More info | May 28, 2013 21:00 | #3 There is an ap at https://itunes.apple.com …r-camera/id500071356?mt=8
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Tommy1957 Goldmember 1,288 posts Joined Apr 2013 More info | May 29, 2013 06:08 | #4 Canon sells an AC kit so you can run your camera on household current. Look, Ma! No batteries!
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Pondrader "now I'm no rocket scientist but I do get a shot or two"  16,028 posts Gallery: 2548 photos Best ofs: 5 Likes: 57084 Joined Aug 2012 Location: Minden, Ontario, Canada More info | May 29, 2013 07:28 | #5 I just shot my nieces wedding last weekend. I shot 2050 pictures on one battery so the little 650D battery can deliver!! Jeff ........, 7D, 70-300L, 100-400LII
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mwsilver Goldmember More info | May 29, 2013 09:16 | #6 Pondrader wrote in post #15978646  I just shot my nieces wedding last weekend. I shot 2050 pictures on one battery so the little 650D battery can deliver!! The OP is asking how long it will work on a single long exposure. Very different. Mark
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May 29, 2013 13:01 | #7 Ya, I might not be near AC power. Thanks for this info.
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Mavgirl Senior Member 647 posts Joined Mar 2013 Location: Dallas area More info | May 29, 2013 13:10 | #8 Dan Kearley wrote in post #15979580 Ya, I might not be near AC power. Thanks for this info. What would happen if the battery died mid exposure? Would it save an image still? I don't believe so. At the end of that exposure it still has to save it to the card and it needs power for that. 6D/50D/350D with too many lenses
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May 29, 2013 13:13 | #9 I've done quite a few 30 minute + exposures on a single battery on my 7D.... it helps if it's a colder night... Canon 5dmkIII, Sigma 15mm f/2.8FE; 35mm f/1.4; Canon EF70-200 f/2.8L IS II; --- YN560 x 7
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Foggiest Senior Member 584 posts Likes: 1 Joined Mar 2012 More info | May 29, 2013 13:22 | #10 Extend capacity with a battery grip ?
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