The Sto-fen OM-ET Omni-Bounce for Canon 600EX-RT creates a diffused bare bulb effect, giving even coverage across the entire frame, with lenses from 15mm to 200mm in the 35mm format (and equal in other formats as well). The Omni-Bounce is easy to use and goes onto and off the Canon 600EX-RT flash in seconds with custom fitting and no touch fastener.
Designed for years of service without the bulk of some other diffusers, it is small enough to fit easily into a gadget bag or pocket.