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Waterproofing DSLR
Topic Started: Feb 26 2009, 11:23 AM (544 Views)
Trigger Happy
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Lone Wolf
Mar 3 2009, 12:33 PM
Water pressure increases with depth at roughly 1 bar (approx 14.7 psi) for every 33 ft so what is waterproof at the surface may not be so at depth. One has to remember that this pressure will compress the air (and the bag) into smaller volume quite rapidly as depth increases and this in turn will result in drastic changes in bouyancy.
not to mention compression of a bag of air at depth will lead to an implosion.

if the usage is for swimming pool, snorkelling (on surface with no free-dive), then there are many pns which do a great job. i bought my wife an olympus 810 (iirc the model) and the seals are quite impressive.
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