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Flash-to-Subject DistanceISO Film Speed Flash-to-Subject Distance
25 2 to 5.6 ft (0.60 to 1.7 m)
50 2 to 8 ft (0.60 to 2.0 m)
100 2 to 11.3 ft (0.60 to 3.5 m)
200 2 to 16 ft (0.60 to 5 m)
400 2 to 22.6 ft (0.60 to 6.8 m)
800 2 to 32 ft (0.60 to 10 m)
1600 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.