[photo-3d] Re:Camera implosions on a grand scale

[EDuw3D@xxxxxxx]

From: EDuw3D@xxxxxxx

IMPLOSIONS!!!    are a major consideration for all  underwater 3D deep water 
photographers.    An underwater housing for a camera has an increased chance 
of IMPLODING - collapsing in on itself due to increased water pressure - as 
one takes the camera deeper.        The photographic equipment on the Titanic 
expeditions experienced pressure in excess of 1 ton per square inch.    A 
lens port of four square inches would have over 4 tons of pressure on it's 
surface.    That pressure is so great, that IF the front lens port were to be 
forced inward - IMPLODE- it could force the lens at camera inward with such 
force and SPEED that it could come out the back of the casing and like a 
bullet, possibly damaging the submersible vehicle that the photographers are 
in, causing IT to implode.    Not a pretty thought.  Your average six foot 
diameter spherical chamber that would house underwater photographers at a 
depth of  a mile in the ocean have  a total force on the surface of over 
SIXTEEN THOUSAND TONS - all photographers working at that depth are well 
aware of the consequences of such an IMPLOSION!!!!!!!!!     All cameras used 
in deep water are tested to prevent such catastrophic IMPLOSIONS.

EDDD Jameson
3D Underwater Productions
P.O. Box 127
Berlin, MA  01503 USA
email:EDuw3D@xxxxxxx

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