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Long exposure shots
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I have a Cannon EOS 400D camera and would like to try taking some long nightime exposure shots i.e star trail shots. I have heard that there is a danger of overheating and damaging the sensor in the camera with taking shots with exposures of more than 1 hour. I would appreciate if anyone can advise me please on this
thanks
JohnJohn,
I am unaware of any issues of heating in camera causing damage to the sensor.
A lot of astronomy guys use DSLRs for long exposure work and have no issues regarding sensor damage.
With long exposures, you will inevitably heat up the sensor which will cause noise, if you can find a way to keep the camera cool
during your exposures, this will help to reduce noise.
Some of astronomy guys modify webcams for long exposure work by attaching active cooling devices like a peltier cooler to keep the noise down.Regards
DarraghJohn,
There is also a custom function on the 400D to deal with noise on long exposures, check the details in the manual.
I haven’t heard either about the sensor heating issue, beyond the noise problem.Martin
Your battery running out will probably be the biggest issue you’ll face.
You should also check out whatever Long Exposure setting(s) you have on the camera in order to reduce the Noise
which you’ll probably notice as a result of the long exposure.I dont mean to hijack this thread – but does anyone know if you can do long exposures on the Nikon D60??
Slang61, yes you can do long exposures on a D60. I think you can possibly only do up to 30 minutes, as this is the case with the D50. You’ll need a remote release, unless you want to stand holding onto the shutter release button for half an hour.
Oh, and you’ll get a lot of noise, but it’s fun anyway.
What banner is talking about is the “hot pixel” problem which is indeed prone to happen at extremely long exposures.
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