I can't find the pic of Frank Hurley astride the bowsprit of the Aurora on the Mawson Antarctic Expedition (it was published in the Sydney Morning Herald today) This will have to do--the question being how he might have handled a light meter as well as the camera in such acrobatic situations.

BTW if you search for Frank Hurley Aurora in Google images you'll find several copies of him lowering his processed film over the rail of the ship and into the sea to wash it. I'm not sure what that would do to the emulsion.