TECHNICAL INFORMATION/PHOTOGRAPHY TECHNIQUES continued

FLASH PHOTOGRAPHY

An electronic flash unit is convenient not only for night and dimlight shooting but also as a supplementary light to fill in the shadows in daylight. Daylight fill-in flash is especially effective when shooting outdoor subjects which are backlit or in motion. With a Nikon dedicated flash, such as the SB-15 SB-16B or SB-18, the FA offers fully automatic through-the-lens (TTL) control of the flash exposure. This means that while the shutter is open, a special silicon photodiode (SPD), located at the bottom of the mirror box, reads the light reflected directly off the film and determines the timing to cut off the flash output, ensuring correct exposure.

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Nikon Nikon Nikomat FT, Nikon FA manual Flash Photography