Flash-to-Subject Distance ISO Film Speed Flash-to-Subject Distance
25 50 100 200 400 800 1600 2 to 5.6 ft (0.60 to 1.7 m) 2 to 8 ft (0.60 to 2.0 m) 2 to 11.3 ft (0.60 to 3.5 m) 2 to 16 ft (0.60 to 5 m) 2 to 22.6 ft (0.60 to 6.8 m) 2 to 32 ft (0.60 to 10 m) 2 to 45 ft (0.60 to 14 m)
Flash Tips � Turn on room lights and have the subject face the lights to minimize red eyes in pictures. � Stand at an angle to shiny surfaces like windows or mirrors to avoid flash reflection and bright spots in your pictures. � Keep your fingers and other objects away from the picture-taking lens, flash, and meter-cell window to avoid dark or light pictures.