I am contemplating doing some pinhole still life and would like to try using my monolight. Has anyone tried using flash with a pinhole? My f stop is 469 and my asa 50 any exposure recomendations. I was going to try metering then just flashing again a number of times for the appropriate f stop i.e. if metered at f16 at 1/30 give it 7 flashes instead of 1.