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long exposures using bulb


12 years 9 months ago #113620 by athday00
I would like to shoot a long exposure of one hour. If I do this, would it burn up the camera's sensor?
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12 years 9 months ago #113632 by Henry Peach
It would not damage your sensor assuming you aren't photographing the sun, lasers, someone welding, etc....
mattneedham.zenfolio.com
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12 years 9 months ago #113636 by athday00

Henry Peach wrote: It would not damage your sensor assuming you aren't photographing the sun, lasers, someone welding, etc....


Nope, no desire to photograph the sun. Now lasers and someone welding could be interesting, but I imagine shooting those during the day would over exposure the picture and it would only be white.
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12 years 9 months ago #113638 by effron
Here be a good site..........
bulbphotography.com/
Why so serious?
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12 years 9 months ago - 12 years 9 months ago #113640 by Henry Peach
Don't shoot them at night either. Anything strong enough to damage your eyes might damage your camera sensor. But long exposures of normal lights at night is fine. The camera probably will heat up some, and you'll have to see if your battery will allow a 1 hour exposure.

With lasers the issue is only when the laser is aimed into the camera. There are several videos out there showing damage caused when shooting video of laser light shows with DSLRs.

Do some test shooting. With exposure times like 1 hour the noise from the sensor heating up may become a limiting issue. If you are shooting ISO 100 for an hour see how it compares to ISO 400 for 15 min and ISO 1600 for 4 min.

Look into the noise reduction features of your camera. Some long exposure default settings require a dark exposure immediately following the exposure. This means for a one hour exposure your camera would be tied up for 2 hours. I turn that feature off.

EDIT: Of course you can always purchase special filters that would protect your camera whe shooting the sun, welding, directly into lasers, etc... It's just special equipment most folks don't have.
mattneedham.zenfolio.com
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12 years 9 months ago #113645 by Shadowfixer1
Nikon uses dark frame noise reduction. That means that a 1 hour exposure is really two hours worth of battery time. After the camera makes the initial exposure, it makes one of equal length with the shutter closed and compares the two frames and takes out what it thinks is just noise. The camera will be tied up for an extra hour and you need a good battery.
www.betterphoto.com/?ramshots
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12 years 9 months ago - 12 years 9 months ago #113810 by effron
Actually, if you shoot with NR off, you can put the cap on and take a manual half second "exposure" following the long ones, and do the NR in photoshop.......B)

a good thread.........
www.luminous-landscape.com/forum/index.php?topic=25491
Why so serious?
Photo Comments
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