Coming from a 'oldtimer' perspective in wedding photography, 160 was the standard film speed, and most rated VPS at 125 for a bit more shadow detail. The 160 was really handy when you had to calculate Guide Numbers on the fly with a non-Auto Norman 200b, but after a while got easier, 10 ft is f16. I still find that speed capable when doing outdoor bright light portraits with fill flash, 1/250 and f11 for a decent distance works well. I wish my D3 went lower, I guess I'm the only one who has to shoot in bright light on a beach with flash at something less than F32.