GoPro fogging - can't stop it - why does it?

[plummet]

I haven't read all the replies. So this may have been suggested.

Try an anti fog product for car windscreen. The one I used was rainx.
The chuck some rice grains in the side. That sucks up some extra moister.

[RickI]

Why is this still a problem for you? I've been using (reusing) small paper towel sections behind the camera, away from the seals for many years. I've done this wherever I have traveled, in snow, in the rain, hang gliding, underwater, on kites, in the surf, hot and cold weather and I almost never have a fogging problem. This is for dozens of cameras and tens of thousands of images. I seal the housing inside, usually in AC if it is in use. Water droplets may show up on the outside often enough from spray, etc. but that is a different problem. I prefer to use the Dive Housing but the newer, thinner housing has even better heat transfer characteristics and a lesser tendency to fog without anything added to the housing.

Your climate may be radically different from mine but I have used this very simple solution all over with consistent good results.

[Vin Stefanelli]

you know what you guys?
I just read something about a
camera housing for helicopters
that carry an aim-able lens,...
they all have small air pumps
that keep positive pressure
in the housing
that were said to
prevent fogging!

[Vin Stefanelli]

kiters ought to be the first to
make a gopro housing
with a tiny reebock pump built into the side!