Nicer on black. Still playing with wider apertures - this one at f4.5 but had to up the shutter speed to (1/1000) - may have to consider investing in the ND filter.
@skskunky ND filter is a "neutral density" filter - basically to let you use wider apertures without changing the color of what you're shooting - don't totally (understatement) understand but it would let you shoot slower speeds - drawback - $$
Can you get a ND filter for your canon powershot?