after a little more thought...here’s a shot taken at 1/1250th, f3.5, ISO 3200. I have no fears of shooting the 1dx at ISO 3200, so I gave the light to my aperture and shutter speed...but as you can see, i could’ve shot this at f 4.0, ISO 1600 and 1/500th (if my math is right) (i’m drinking beer...