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A DIN 1st stage has a O ring at the end which buts to the valve on the cylinder to seal. The longer DIN 300 bar 1st stage may seal both DIN 200 bar valves (on a 200 or 230 bar rated cylinder) and DIN 300 bar valves (on a 300 bar rated cylinder) The shorter DIN 200 bar 1st stage may only seal a...

When there is sunshine an old CD disc is an effective free mirror, not needing any batteries

Do not put your feet into the trap of doing night dives with more than 3 divers together. Just you and your buddy is even better. One may only check whether one diving lamp on the left and/or on the right is still there. And when one light fails keep physical contact with this diver and end the...

Did you pop up the flash before you put the camera into the UW housing?

I began OW photography 2 years ago. Last April my Sea & Sea 750 was stolen but not the OWhousing. Because the 750 camera was no longer in the offering, I decided to buy a DX 860 G set including the close up lens. I used it on some murky cold water dives in Belgium, with poor to mediocre...

Last Monday April 14th, my Sea & Sea 750G digital compact camera (picture attached) was stolen in Lisbon just before I flew back to Belgium. I reported it to the airport police but chances are very slim that they will find it back. I still have the underwater housing. I am open to any good...