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Mastering the Nikon D300/D300S by Darrell Young

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Flash Modes

(User’s Manual – D300S page 169; D300 page 171)

The built-in pop-up flash has two types of flash metering:

  • i-TTL Balanced Fill Flash –  The flash fires in two stages. Nikon calls stage 1 “monitor preflash”. The built-in flash emits a series of almost invisible flashes before the main flash burst fires (stage 2). The preflashes allow the 1005-pixel RGB flash sensor to examine all areas of the frame for reflectivity. The camera uses the Matrix meter and distance information from a D or G lens to calculate a flash output that is balanced between the main subject and ambient lighting.

  • Standard i-TTL –  When the Spot meter is used the camera automatically switches to standard i-TTL. This mode ignores the background and concentrates on whatever ...

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