Posted by Chuck Tribolet on July 31, 2003 at 21:57:51:
In Reply to: Alleviating underwater digital camera fogging. posted by Chris on July 30, 2003 at 14:14:34:
External strobe power level has nothing to do with
camrea power consumption. You said "slave" so
nothing gets routed through the housing. And
even if the external strobes are triggered by a cord,
the current in the cord is minute. Strobes haven't
dumped their full power through the camera since
like the 1960s.
It's interesting that you digital shooters have
this problem. I've only had a lens port fog up
on my film camera ONCE in 1200 dives, and that was
because a couple of drops leaked past the zoom knob on
the side of the lens. The water didn't cause
any damage, though it cost quite a bit to replace
the outer shell of the lens which had corroded a
little at the O-ring.
And it's unlikely the port is flourite -- flourite
absorbs moisture. It's been used in some VERY
expensive large telephotos in the days before
ED glass, and the moisture absorbtion was a problem.
Chuck