I went out into the car today and set up for a test with all the auto settings turned off and the camera set at 24p at 24M (FX). I had the screen pushed all the way against the body of the camera so that for those who don't want to take the sticker off the back of your camera, this basically is the same thing. The same thermometer was used as the Fan mod video and it read 87 degrees. I am happy to report that my camera did not even show the over heat warning icon. So for those who like shooting 24p no mod necessary but for those who want to shoot 60p non stop (29.50 minutes) you just might need the fan mod.
The mic does not pick up the fan noise. The fan can only be heard if you put your ear about 3 inches away. It is not and audio problem at all. And the fan has no visible vibration.
Fan mod tips
1. 9 Volt battery will last about 6 hours I did a battery test and got tired and gave up at the 6 hour mark but it may last longer.
2. Put fan mod on before you start filming if you know you are going to film longer then six to twelve minutes, because once the camera over heats its hard to get the camera back to lower operating temperatures.
3. Make sure when gluing the fan to the square plastic base that you position the fan so its blowing toward the camera
4. Only use a small amount of Velcro so it is easy to take the fan on and off. You don't need much to hold this small thing in place.
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