ICEINSPACE
Moon Phase
CURRENT MOON
New Moon 0.3%
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02-03-2009, 06:58 PM
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Registered User
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Join Date: Sep 2008
Location: all over the shop...
Posts: 2,098
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Canon 350D settings
Should I have the "Long Exposure Noise Reduction" (CF02) set on or off when doing some 15-30 sec tripod shots?
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02-03-2009, 07:04 PM
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Sir Post a Lot!
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,788
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It's up to you. What ISO are you using?
Sometimes I use ICNR even for short exposure shots.
If you're doing star trails I wouldn't, because you'll end up with gaps in the trails.
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02-03-2009, 07:09 PM
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Registered User
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Join Date: Sep 2008
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oh, thinking of trying for Lulin tonight.
Say, ISO 800, 24mm, 15-20 sec exposures on a tripod, 30-50 in total. What are my chances of getting anything decent for DSS or Registax to work with?
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02-03-2009, 07:10 PM
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Registered User
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Join Date: Jan 2008
Location: Emerald, QLD
Posts: 559
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As Mike said, probably depends on your ISO. Also the ambient temp, if its warm it could introduce noise into the image. Experiment and see.
Michael
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02-03-2009, 07:13 PM
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Join Date: Feb 2006
Location: Perth, Western Australia
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I find that even with ICNR turned on in the settings my 350 doesn't decide to use it until the exposure time goes over something like 20 or more seconds. I would have it turned on for such shots. I only turn it off for series of longer exposures these days.
Roger.
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02-03-2009, 07:18 PM
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Join Date: Sep 2008
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Thank you all, I only have a small window tonight (30-40 minutes) of observing as I have to get plenty of sleep for a big day at work tomorrow, and it may be my last chance at Lulin for a while.
And you wouldn't believe it, in the last 15 minutes the clouds have rolled in!
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02-03-2009, 07:46 PM
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Join Date: Jan 2008
Location: Emerald, QLD
Posts: 559
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I think with ISO 1600 ICNR will activate if the exposure is longer than 1 sec, with ISO 800 or less I believe the exposure needs to be greater than 30 sec for ICNR to work. **this is going from memory here, I could be wrong**
Michael
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06-03-2009, 10:51 AM
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Join Date: Sep 2008
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Thanks again. Too many clouds from now on but I will keep all this in mind for the next comet!
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