H–13H Tips on Speedlight Care and Reference InformationSpecificationsElectronic construction Automatic Insulated Gate Bipolar Transistor (IGBT) andseries circuitryGuide number (at 35 mm zoomhead position, in FX format,standard illumination pattern,20 °C/68 °F)34/111.5 (ISO 100, m/ft), 48/157.5 (ISO 200, m/ft)Effective fl ash output distancerange (in i-TTL, auto aperturefl ash or non-TTL auto flashmode)0.6 m to 20 m (2 ft to 66 ft) (varies depending oncamera’s image area setting, illumination pattern, ISOsensitivity, zoom head position, and lens aperture inuse)Illumination patternThere are three illumination patterns: standard, even,center-weightedThe light distribution angle is automatically adjusted tothe camera’s image area in both FX and DX formatsAvailable flash modei-TTL•Auto aperture fl ash•Non-TTL auto fl ash•Distance-priority manual fl ash•Manual fl ash•Repeating fl ash•Other available functions Test fi ring, monitor pre-fl ashes, AF-assist illuminationfor multi-point AF and modeling illuminationNikon Creative Lighting SystemA number of fl ash operations are available withcompatible cameras: i-TTL mode, AdvancedWireless Lighting, FV lock, fl ash color informationcommunication, auto FP high-speed sync and AF-assistillumination for multi-point AFMultiple fl ash-unit photographyoperationAdvanced Wireless Lighting•SU-4 type wireless multiple fl ash-unit photography•Flash exposure control set on thecameraCamera’s sync modes: slow sync, red-eye reductionslow sync, front-curtain sync, rear-curtain sync, rear-curtain slow syncPhotography functions: auto FP high-speed sync, FVlock, red-eye reduction