The rainy season is fast approaching here in the Pacific Northwest so just for fun I picked up an old Nikonos II with accessories at a garage sale.... Now I am embarrassed to say I cannot even figure out how to open it. So can any of you Neptune types help me out... Also are batteries still available for the Sekonic Marine Meter II? Also..... Which way does that view finder mount on the bracket....... Also why would there be a tripod socket on an underwater camera? Also.... yikes, the questions are adding up fast perhaps some patient underwater photographer could answer some questions for me via PM. Thanks Annie.