To light a foreground portrait subject against a setting sun, put a hot shoe flash inside a 36-inch umbrella-style softbox (A), and warmed up its output with a 1/4 Rosco CTO warming gel. assistant suspended the Softbox above the subject using a monopod (B) as a boom. posed the child to block the setting sun. Canon EOS 5D (C) and 17–40mm f/4L EF zoom at its 35mm setting. fired the flash with PocketWizard Plus II, for an overall exposure of 1/180 sec at f/13, ISO 100.