Why does it say that one can have a digital waterproof camera under water ONLY FOR UP TO 1h ??

I can't find now where I read it, but I think it was in one of those Olympus Stylus Waterproof cameras. Now I don't understand how being under water for more than an hour could damage the camera while being for 45 minutes cannot !! There are depth regulations, OK, I get that, it's because of the pressure. But once the camera is a waterproof one, it is waterproof always !!

Is someone able to explain this ???

It's because of the seals and the pressure of being underwater. After a certain point, the seals that keep the water out can't deal with the pressure and could potentially leak. It's not going to start leaking exactly one second after it's been underwater for the stated time period, but after that point the seals can leak, damaging your camera. Think of it like a room with port holes in a sinking ship. When the water on the outside of the port holes reaches a certain pressure point (usually after a considerable amount of time), they start leaking, and eventually fail. It's the same principle. Also, it's not an hour for the life of the camera, it's one hour an occurance. Like you go diving one day, use it, and then diving the next day and use it for an hour again, just in case that wasn't clear. Hope that helped!

Yes, it just basically means that it can resist the water pressure for one hour, past that the water will start going in the camera.

um cause condensation i think condences after so much time just like when a cup sweats. I think, not positive

u got me