Waterproof e.g. WG depths


Eastridge

Link Posted 23/08/2011 - 10:45
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
Sharon's: K-x, FA35/2, DA 18-250.Glen's: K10D, DA100 Macro, 55-300, Paragon 500, Silk Pro700 Tripod

fatspider

Link Posted 23/08/2011 - 12:17
Theres a difference in the descriptions.

"Water Resistant" and "Waterproof"
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Mannesty

Link Posted 23/08/2011 - 21:25
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.
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Last Edited by Mannesty on 23/08/2011 - 21:28

geclinke

Link Posted 23/08/2011 - 23:17
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.
k5, 50mm FA, 18-55mm Kit, 50-200mm DA, 15mm Fisheye Sigma, 10-17mm DA Fisheye, 18-55mm DA WR, DA* 60-250, DA* 16-50

johnriley

Link Posted 23/08/2011 - 23:44
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.
Best regards, John

geclinke

Link Posted 23/08/2011 - 23:51
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.
k5, 50mm FA, 18-55mm Kit, 50-200mm DA, 15mm Fisheye Sigma, 10-17mm DA Fisheye, 18-55mm DA WR, DA* 60-250, DA* 16-50

Eastridge

Link Posted 24/08/2011 - 09:14
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.
Sharon's: K-x, FA35/2, DA 18-250.Glen's: K10D, DA100 Macro, 55-300, Paragon 500, Silk Pro700 Tripod

johnriley

Link Posted 24/08/2011 - 09:27
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!
Best regards, John
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