AquaPac makes a great product. There are several similar bags on the market, Japanese-made instead of British-made, with even stronger locking bars. Actually metal bars instead of plastic, with screw-down locking knobs. I've used them for cameras down to 15 meters underwater, but wouldn't take them lower despite the manufacturer's claim to be waterproof to 35 meters. Definitely wouldn't work for deco stops. But then, I don't know if the Sony 505 could handle the pressure of tech dives? Years ago I had some Nikon cameras seize up in EwaMarine bags at 40 meters, as the pressure wouldn't let me operate the buttons. Stayed dry but wouldn't function. Alsosak bags are rated to 100 ft, and are certainly strong enough, but I'd prefer the bags made specifically for diving if I'm taking the 505 into the sea. For beach, rain, or pool, one dollar Alosaks are fine.
Stitchawl
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