Image Resource released their water testing for the Olympus OM-D II, Sony a7RIII, Nikon D850, and Canon 5D Mark IV. Of course, the Olympus OM-D II passed without a problem, which isn’t surprising because Olympus has been passing durability tests for years now. Olympus builds notoriously well-sealed cameras for these kinds of tests and no one should hesitate shooting a weather sealed Olympus in the rain or cold.