(There is also an interesting film holder (it holds 2) with a watertight seal (o-ring). Not to be taken underwater… but even on a boat, safe containers for films are always useful. The technical specifications (indicated in the manual downloadable here, and which is also really well done, with very clear instructions and adequate illustrations) are as follows: 35 mm f. 4.5 lens; fixed focus with minimum distance 1.5 m out of water, 1 m under water); automatic exposure, from f. 4.5-1/40 to f. 11-1/250.
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