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[Q] Newbie: How to test a used housing & change lenses

Started Dec 30, 2019 | Questions thread
PHXAZCRAIG
PHXAZCRAIG Forum Pro • Posts: 19,651
Re: [Q] Newbie: How to test a used housing & change lenses

kelpdiver wrote:

Lastly, what is a proper way to change lens during dives to avoid capturing moisture inside the housing?

I used to worry about that a lot - would only open and close the camera in an air conditioned room. After a number of liveaboards where everyone swapped between WA and macro on the camera deck,

I never worried about it too much.  10 years of diving with point-n-shoots that required a battery change between every dive led me to think that shore dives are a more likely place to cause a leak from opening a housing on-site.  Boats at least tend not to have blowing sand.

I've had to come up at the beginning of the dive, open the (D810) housing, remove the camera, change autofocus settings, put camera back, pump down a vacuum again, and restart the dive.   That makes me nervous for a bunch of reasons, including somewhat wet salty hands handling my camera, and not having more than a few seconds of confidence from the leak detection device before going back in.  I've had to change batteries and/or lenses while kneeling in the bottom of a panga.   So far, never an issue opening on a boat.   I'm actually more worried about putting a housing half down on a towel in a hotel room and getting a fiber over the o-ring from that.

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Phoenix Arizona Craig
www.cjcphoto.net
"In theory, practice and theory are the same. In practice, they're not."

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