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Mastering Canon EOS Flash Photography, 2nd Edition by NK Guy

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10 Manual Flash Metering

London Eye. Snowfall over the London Eye Ferris wheel, London Southbank, England. A 580EX II flash unit was handheld over the camera and triggered manually at half power in order to illuminate and freeze the falling snow. Without flash the fast-moving and dimly lit snowflakes would not have recorded in the final picture. EOS 5D, 0.8 sec at f/5.6, ISO 100, 22mm.

This is an example of totally manual open flash to highlight foreground objects.

The automatic flash metering technologies described in the previous chapters are quick and easy to use. They’re ideal for casual snapshots or for rapidly changing situations such ...

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