Originally posted by Manel Brand That's the most boastful thing I ever seen from a Pentax user. You are pushing your luck...hope you don't regretted.
don't see why...it is resistant and just not designed for underwater use...that mean under water as in a pool, ocean, lake or whatever BODY OF WATER where the pressure increases as you descend. A gentile flow of water as the OP shows is trivial and will exert no significant pressure beyond 1 ATM. This is exactly what the sealing means...I would guess if a car drove through puddle and splashed you and your camera, far more pressure would occur as the water is propelled in your direction.
it is also about how the water if flowing across the surface...if it is flowing over the surface smoothly then it is actually exerting less pressure because, well, has to do with Bernoulli's pressure dynamics principles sort of stuff...just know the faster flow over a surface the less downward pressure the fluid will exert on the walls or lower surface. And the more the flow is altered by contours the pressure us reduced even further. That is all an over simplification but I think it's enough for this trivial a system. Basically it is the same way your blood pressure works or a hose works or a plane flies. The faster the flow through a blood vessel the lower the outward pressure the fluid exerts on the walls of the vessel, a hose is just the same sort of thing.
Of course using a power jet nozzle directly at the camera will indeed be potentially risky, heck even fatal for the body...being afraid of running it under a faucet is just plain "chicken little"...
Best way to ensure things like dust, sand and salt water corrosion never happen. One needs to clean fishing gear the same way and some of my reels make the cost of a K20D or K7 with a 60-250 on it look like kiddie toy prices...they also have environmental seals to protect in gearing. Never found a drop of water in them either...btw, there are not considered waterproof but rather resistant. Same for watches...I know if one of my Pentax bodies fails due to a failed seal then it will be repair while in warranty. The purpose of the seal is to keep these things OUT and allow use in wet, dusty or any other weather...
BTW, if you use your camera at the beach on a regular basis, and do not immediately wash it off when you return home, it will actually accelerate the aging process from the corrosion from leaving the salt water deposits on the body.
I would do take one final step though, rinse it off with distilled water after the sink, hose or faucet cleaning...especially if you live in an area with hard water. You want to remove those deposits as well. Then take the time to dry it well.