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Most of the survey responses are indicating a 300' rating. It sounds like 150' may be sufficient for many of those, based on feedback here.
HUH? First you say that if a housing can't go to 300 feet it is only for picture snappers, then picture snappers only use very low end cameras. I repeat that there are quite a number of "underwater photographers" using very high end (5DMIII, D800) cameras that don't care to go much beyond 100 feet. Look again at almost any major underwater photo competition and show me a best in show or best in a category that was taken very deep, there may be one or two but not very many.The picture snappers are using very low end cameras with plenty of cheap housings available for them including some big name companies. It is a niche market because it is VERY crowded market and is extremely price sensitive and a tiny startup company will have a very difficult time competing.
That is only true if you believe that only people who want to go very deep will buy the housings and that clearly isn't true..000001 of 6,000.000 divers is around 6 people. Hummmmmmm, if this is the case, I don't think that S&S, Nauticam, etc. can survive for a minute based on these numbers.
…But doesn't adding lead make it more negatively bouyant. :blinking: I think the big problem is that folks want very compact camera/housing systems and adding air makes the housings way more bigger. Hence the availability of the mega flotation arms…