You don't have time to search one, to spend time on the net or to spend money.
So you decide to make one.
This happened to me last week.
I looked around and I found:
- a light spot
- a plastic box
... and a condom / or clingfilm
Less than ten minutes later my pocket was ready and I went fishing tuna at sea. I didn't catch anything, but my camera survived.
Step 1: Break the light spot
Step 2: Cut the plastic cap
Measure the depth of the lens of your camera when zoomed out, add a safety distance and cut the base of the plastic box.
Add powertape to seal cap & tube.
Step 3: Prepare the condom...
Most condoms are waxed. You don't want to wax your camera? So clean it and dry it.
Step 4: Assembly
Condom not strong enough? Use clingfilm, or a balloon.
Don't forget the powertape. Again.