Hello, I am shooting with a Canon 50D with the 580 EX speedlite. I have the plastic diffuser cap on the end of it, but the flash always seems a little harsh anyway, even when I point it at a 45 angle. Anyone have any better ideas on diffusing flash when indoors so it's not so harsh? ETA: I do a lot of indoor shooting at night in venues with high ceilings, so bouncing off the ceiling is not always possible. Thanks!