Waterproof e.g. WG depths

HI a quick general question that a search didn't answer.

On a watch the Water Resistant depth is not a pure measure - i.e. a watch saying 50M Water Restistant is really only 'splash proof', you need at least 100M to say swim in one.

Waterproof cameras quote depths like 3M, 10M, 12M - are those true,depths or is some 'translation' required as with watches.

I want a camera to take with me surfing and maybe the odd snorkling trip so if it's a true depth a presumably a Waterproof to 3M would be fine

Theres a difference in the descriptions.

"Water Resistant" and "Waterproof"

I don't think you'll find a DSLR + lens combination that is anything other than weather/spalsh resistant (WR) unless it's in a properly sealed waterproof housing.

I think you'll need to look at buying a compact that is waterproof to whatever depth you need, and preferably one that floats if/when you drop it into water.

Checkout the article about the Pentax Optio WG-1 GPS model in the adverts on the right. There is a chart listing several cameras that the makers claim are waterproof to 10 metres.

Those watch depths are based on static pressure, equated to depth. If something can sit in a pressure chamber full of water at 5 bar, an equivalent depth will be stated.
If you actually plan to use the item in the water, then movement etc. Can be a big factor. Swishing around a 20m water resistant watch in the bath will probably cause it to leak. In my experience, swimming with a waterproof camera can have the same effect, lost an olympus "tough" that way.
If you really want true "waterproofness" you have to pay for a good housing. 10m waterproof cameras are fine for splashing in the pool, but they won't last, and won't suffer too much exuberance.

Pentax specify the depth and duration, the latter being up to 2 hours. They also specify that seals must be replaced after I think one year. So an annual service looks likely top ensure they remain waterproof.

If you are going to take it into the sea you absolutely _have_ to wash it off in fresh water as soon as possible afterwards. Seawater will eat through those seals in a few weeks.

Thanks for the info. very helpful.

I have to confess to being out off by needing to pay for an 'annual service' to keep the seals waterproof as I was only looking for a cheap one for occasional use e.g. the fuji SRS have at £99.

Maybe best to forget it for the momment & keep yo shooting on the shore with the K10D and telephoto.

It's the same with watches, but the phrasing for all waterproof items seems to be more of a "if you don't have it serviced we don't guarantee it's still waterproof" variety, rather than the more extreme "it won't be waterproof after 12 months."

DSLRs also have a recommended servicing interval "one to two years to maintain high performance" - I don't know anybody who does that!