Get a vacuum port installed! Expensive but so is your camera. My friend had a little leakage while diving Truk using the Ikelite housing. He later flooded it while diving at Grand Cayman. I WAS a 5D MII...now it is scrap.
Moisture detectors have thier limits and don't allow a pre dive check.
There are several vacuum systems that I know of that I have seen on the net that allow you to install it yourself or come with the housing:
The "SENTRY" by Underwater Camera Stuff:
http://wetpixel.com/...housing-sentry/
http://www.uwcameras...ry_installs.htm
Review
http://wetpixel.com/...housing-sentry/
Hugyfot:
http://www.hugyfot.c.../HugyCheck.html
Leak Setinal:
http://www.vividhous...ak-sentinel.php
Review
http://www.vividhous...tzone_OCT11.pdf
Gates has one also for their video housings but I can't tell you if you can reverse engineer their setup to fit any of your housings you are looking to buy.
I personally will be installing a vacuum setup for my Aquatica housing using the Sentry System.
You should also look into flood insurance from the Divers Alert Network (DAN):
http://www.diversale...ance/equipment/
Operating Experience (OE) from scubaboard:
blibecap
January 27th, 2011, 01:11 AM
I agree on user error responce but I think the third or forth issue is user error in the rinse tank. I never leave my camera in the rinse tank without my hand attached to the housing.
In regards to the port coming off easily or the latch coming open, with 10" of vacuum which is what the Housing Sentry works under, a force of Fifty pounds is required to break the seal on the dome port or the housing back. This is posted on the FAQ page. So if a latch comes open or a port lock comes loose it may not matter because until you release the vacuum on the housing you most likely will not be able to get the housing open anyhow.
With the vacuum seal you could theoretically dive with no latches and no port clips although, I wouldn't recommend it. With a vacuum on the system the deeper you dive the tighter the seal gets until you reach the design limits of the housing.
The idea of a port not as secure as I would like it to be was part of the reason for developing the housing sentry. Another part was to alert the person using the housing the there is a user error somewhere in the assembly process before it is exposed to water. I have had 3 situations where salt water was invading my housing and all three times it was user error. Fortunately for me it was a small leak that was caught before it did any harm.
You can search here and read about floods, if you want more information on the Housing Sentry there was a recent review here or take a look at the web site.
The Meltdownman