How can Canon manage not to put a fan in C300 while we have a noisy fan in scarlet?

[Les C.]

I had a famous actress shouting at me to turn off that nerving noise between takes. She couldn't hear herself thinking. I definitly see the noise as a problem. I hope that the power-management update comes soon. In some points RED still has a long way to go before they reach this state of "just right". But i can't blame them, since i bought into the program.

Actually, I hope they take their time turning on the power management. A CMOS chip can get power thru any of it's inputs if there's no power going into the main power. The trouble is, the power then goes in thru these tiny ESD diodes, meant to protect the chip, but not really meant to deal with that power all the time. RED really needs to be sure everything is in order first, which I'm sure they are doing. That's one complex set of circuit boards if you've looked at the FCC breakdown.

But, back on the fan topic.

At 8 or 10 feet from the Scarlet/Epic, is a fan at 40-45% audible (as in will it be picked up by a boom mike located next to the talent)?

 

[Mike Garrick]

The fan should not be a noise issue if recording audio with a boom or radio mic. It definitely will be a problem if your trying for Audio with an on board mounted mic.

Also this is the same fan as Epic has, right ? Haven't heard huge complaints from that end of the forum & imagine with all those "extra boards" how much harder that little fan has to work.

 

[Lauri Kettunen]

What comes to the original question why C300 and Scarlet/Epic fans are not the same, the answer lies in the amount of data the cameras handle. The more data a processor has to manage with in some given priod of time, the higher frequencies or a larger number of cores/processors are needed. It is unavoidable that this in turn increases the heat losses. Consequently bigger amounts of data imply more efficient cooling is needed. Somebody said once that modern processors generate more heat per square inch/cm than your stove/cooker in the kitchen when its glowing in heat.

Scarlet and Epic are packed into an amazingly small and light box, and therefore the amount of heat generated with respect to the volume is respectable. So, one may well twist the issue around and ask this way: How small amount of data the C300 processes as it does not even need a (more powerful) fan. At least, whenever I pay attention to the fan of epic, I tend to think it means I have the most powerful camera in the world in my hands and it's still this small.