Nikon SB-700 AF Speedlight Users Manual - English - Page 6
Terminology - flash manual
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Preparation About the SB-700 and This User's Manual A Terminology Default settings: function and mode settings at the time of purchase Nikon Creative Lighting System (CLS): a lighting system that enables various flash photography functions with improved communication between Nikon Speedlights and cameras Illumination patterns: control types of light falloff at edges; the SB-700 provides three illumination patterns, standard, center-weighted and even. FX format/DX format: Nikon digital SLR camera image area types (FX format: 36b× 24, DX format: 24 × 16) Guide number (GN): the amount of light generated by a flash unit; GN = flashto-subject distance (m or ft) × f-number of aperture (ISO 100) Zoom head position: position of a Speedlight zoom head; the angle of coverage changes as the zoom head position changes. Effective flash output distance: flash-to-subject distance with correctly adjusted flash output Effective flash output distance range: range of effective flash output distance Flash compensation: intentional flash output change to obtain the desired subject brightness A-6