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Andreas Heijdendael
Member
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# Posted: 24 Jul 06 13:32
Reply
Hi there,
Maybe anybody here knows what's going on with my D70. Might be standard but it's still quite an intresting fenomena. A pretty lousy one to be honest but yet quite intresting.
Here's the scoop:
I've been doing some late-night photographing the other day and I noticed that it took AGES before I got a preview on my screen when doing long exposures. Depending on the exposure time it takes up to 5 minutes before anything shows up on the screen.
Does anybody know why this happens? I'd assume that the camera is doing some kind of post-processing but I'm not sure what that might be.
Greetings,
Andreas
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vahephoto
Member
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# Posted: 24 Jul 06 14:42
Reply
Hi Andreas,
I don't know about the Nikon D70, but the Canon D20 has a feature called "long exposure compensation" which works like this: If you take a 5-minute exposure, the camera will close the shutter and expose the CCD an additional 5 minutes, then subtract the two images to get rid of the noise in your CCD. Could you have this feature turned on in your camera? I think it's called "Long Exposure NR" in Nikon cameras.
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Andreas Heijdendael
Member
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# Posted: 24 Jul 06 14:55 - Edited by: Andreas Heijdendael
Reply
Hi Vahephoto....
I guess you're right about that. I just did some google searching (stupid I didn't do this before) and found that is exactly what it's doing.
Here's an excelent piece of information about the D70, if you might consider bying a new camera. (It's also the piece where I just now found what you said.)
[url=http://]http://www.kenrockwell.com/nikon/d70perf.htm#performance[ /url]
Thanks!
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Jeroen Krol
Member
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# Posted: 24 Jul 06 20:24 - Edited by: Jeroen Krol
Reply
Indeed, it is a feature called Long Exposure Noise Reduction. It reduces, as the name suggests, noise in your image. It works as Vahephoto indicates.
You can turn it on/off in the Shooting Menu ('Long exp. NR'). Just try 2 shots: 1 with and 1 without this option. I think you like it, especially with 5 minute exposures...
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Bunny
Member
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# Posted: 24 Jul 06 23:38
Reply
my Nikon D70s does the same.. but i never wondered why. now i know, without ever asking ;-)
when i think about it, i prefer to wait for the picture as having to much noise in it..
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