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• 04/04/10
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Sunday, April 4th, 2010
 
Here's some more warm up data, this time with the EXIF data taken from the RAW output files.
 
I use EXIF Tool to extract the Canon meta-data text file from each image:
 
EXIF Tool

The plots below show some 5 and 10 minute frames, along with the EXIF data for each frame.
 
 
The correlation isnt 1:1 between the two temperature plots, but it's pretty close.  I think the camera sensor might be on the circuit board rather than in the CMOS array because of the dip in the EXIF - I don't see how the sensor could do that and not have it be measured on the backside with the Hutech sensor.
 
I'd say the EXIF data is a pretty reliabile way to monitor the image temperature of each frame.  I'm going to test this a couple of more times with other ambient temperatures and exposrue times, but I think I'll see generally the same result.
 
Cheers
 
Mark





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