Thread: m20
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Old 05-06-2011, 02:22 PM
adman (Adam)
Seriously Amateur

adman is offline
 
Join Date: Sep 2009
Location: Brisbane
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Quote:
Originally Posted by adman View Post
There is such a huge difference in the noise from the 550D at different temps. My sensor generally sits at about 10 degrees above ambient during an imaging run - so the last few nights it has been 25-26 degrees - but during summer is more like 37-38 degrees. The noise is much easier to deal with at the lower temp.

I will dig up some darks and post them.

That is a cracker of an image by the way !

Adam
Here you go:

I didn't have any 300 second darks at the same ISO - but this is a useful comparison anyway.

1st image: 300 seconds, 400iso, 38 degrees
2nd image: 300 seconds, 800iso, 26 degrees

these are 300x300 pixel crops from the upper left of frame

Adam
Attached Thumbnails
Click for full-size image (300s_38degrees_400iso.JPG)
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Click for full-size image (300s_26degrees_800iso.JPG)
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Last edited by adman; 05-06-2011 at 05:56 PM.
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