This was the start of "The Wet Lens." That is a Canon F1 w/Speedfinder and 20mm lens in an Ike housing. It was a rough day and, as Stan Rogers sings, "and tho' I'm never seasick, I lost dinner over side." I slapped the camera together and went for a dive on the Papoose. At 50' I noticed a fair amount of water in the housing and opted to continue the dive as the camera was already a loss.