Actually no. Your second shot is very typical of a lot of my event work - PR receptions, banquets in dark halls, weddings, etc. I am letting my 580ex "fill in" what's needed. It will properly expose for the foreground..that is, the people.
For this particular shot I would have used ISO 800, 1/40 second and f/6.3 for a modest DOF.
The 1/40 would have been "dragging" enough to allow background ambient light to creep in, and the f/6.3 would have given be a good range of sharpness, edge to edge, for all those people. I am only using the one 580ex, and it is throwing out enough light for the people in the foreground. The background will in fact be slightly darker, but I don't care as that is not the important element in the image. Does this all make sense?
ekrizo wrote in post #10209125
Since I was already at ISO 1600/f4.5/ 1/60 wouldn't moving to the settings you stated would make it significantly underexposed? As I would be losing ~3 stops of light. Are you using additional OCF to compensate?
"This is why I am typically down around ISO 800 and f/6.3 or thereabouts. "