OP
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Bill...I tested the unit in open water extensively. Frontal area is not as big as my 67 Pentax systems and not that much larger than my D3 gear.It is slightly negative uw and handles quite well. It is a robust system and not at all timid ...it need not be confined to a pool !!...However if a lovely model were involved a pool would be fine!!
iain: but these are not the relatively inexpensive housings that the original poster is talking about, or am I just not seeing this correctly.
Bill