191lCompatible Flash UnitsCLS-Compatible Flash UnitsThe D3 can be used with the following CLS-compatible flash units:the SB-800, SB-600, SB-400, SB-R200, and SU-800.❚❚ The SB-800, SB-600, SB-400, and SB-R200The principal features of these flash units are listed below.❚❚ SU-800 Wireless Speedlight CommanderWhen mounted on a CLS-compatible camera, the SU-800 can beused as a commander for remote SB-800, SB-600, or SB-R200 flashunits. The SU-800 itself is not equipped with a flash.A Guide NumberTo calculate the range of the flash at full power, divide the Guide Numberby the aperture. For example, at ISO 100 the SB-800 has a Guide Numberof 38 m or 125 ft.; its range at an aperture of f/5.6 is 38÷5.6 or about 6.8meters (or in feet, 125÷5.6=23 ft. 7 in.). For each twofold increase in ISOsensitivity, multiply the Guide Number by the square root of two(approximately 1.4).Flash unitSB-800 SB-600 SB-400 SB-R200 1FeatureGuideNo. 2ISO 100 38/125 30/98 21/69 10/32ISO 200 53/175 42/138 30/98 14/49Auto power zoom 24–105 mm 24–85 mm — 3 — 4Wide panel 14 mm, 17 mm 14 mm — —Head rotation 7 ° down, 90 ° up,180 ° left, 90 ° right90 ° up, 180 °left, 90 ° right 90 ° up60 ° down(toward lenslight axis), 45 °up (away fromlight axis)1. Controlled remotely using optional SB-800 flash unit or SU-800 wirelessSpeedlight commander.2. m/ft., 20 °C (68 °F), SB-800 and SB-600 at 35 mm zoom head position.3. 27 mm zoom coverage.4. 24 mm zoom coverage.
