Camera Labs

I'm not going to care about condensation this time. Just want to run that single test. I've got a single 2 minute dark at room temp now. I know it could be worse with the sensor running for a long time, but for now it'll suffice. Now the question is how long do I leave the camera in the freezer? I've taken the battery out so I wont kill that!

So far I have found out that the digital thermometer I put inside to see how cold it gets doesn't work at all. This could be interesting...

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.