104Taking Photographs—Flash PhotographyThe D2Hs supports flash photography when an optional Speedlight ismounted on the camera’s accessory shoe. A flash can be used not only whennatural lighting is inadequate, but also to fill in shadows, illuminate back-litsubjects, and even to add a catch light to the eyes of a portrait subject.When used with an SB-800 or SB-600 Speedlight (available separately;237), the D2Hs supports the full range of options available with the NikonCreative Lighting System (CLS), including Advanced Wireless Lighting, i-TTLflash control ( 105), FV Lock ( 112), Flash Color Information Communica-tion ( 52), and Auto FP High-Speed Sync. See the Speedlight manual fordetails.Flash Photography Using Optional SpeedlightsModeling IlluminationSB-800 and SB-600 Speedlights emit a modeling flash when the camera depth-of-fieldpreview button is pressed. This feature can be used with Advanced Wireless Lightingto preview the total lighting effect achieved with multiple flash units. Modeling illumi-nation can be turned off using Custom Setting e4 (Modeling flash; 191).