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Member Since 04 Dec 2008
Offline Last Active Jun 14 2015 07:05 PM

#339629 Definitive Nikon vs Canon Underwater Shootout

Posted by DocTock on 18 November 2013 - 07:13 AM

Given some of the comments, perhaps this "showdown" should have been saved for an April 1 posting...

#334304 New Housing "Airlock" Vacuum from Backscatter

Posted by DocTock on 14 July 2013 - 11:17 AM

John - That posting  :goodpost: is a classic! I would love to use it as my Signature!



I just added a Housing Sentry vacuum check with no electronics. 

The vacuum added a level of comfort/ security; decreasing the level of risk of a catastrophe. 

I used a hand pump as it has an attached gauge (and yes, everyone on the boat HAD to make a joke about the hand pump).

Prior to each dive I would check the state of the vacuum by simple insertion of the hand pump.

After checking the status, it became routine to re-plug the bulkhead, especially as the pin is chained to the bulkhead on a very short chain.


The biggest advantage for me is I ended up using my camera out of the housing more than I have in the past.