Nikon D3s Body Only D3S User's Manual - Page 219

Flash Modes The camera supports the following flash modes: Flash mode Description This mode is recommended for most situations. In programmed auto and aperture-priority auto modes, shutter speed will automatically be set to values Front-curtain between 1/250 and 1/60 s (1/8,000 to 1/60 s with Auto FP sync High-Speed Sync; 0 311). Flash is combined with shutter speeds as slow as 30 s to capture both subject and background at night or under dim light. This mode is only available in programmed auto and aperture-priority auto exposure modes. Use of Slow sync tripod is recommended to prevent blurring caused by camera shake. In shutter-priority auto or manual exposure mode, flash fires just before the shutter closes. Use to create effect of a stream of light behind moving objects. In programmed auto and aperture-priority auto, slow rear- Rear-curtain curtain sync is used to capture both subject and sync background. Use of tripod is recommended to prevent blurring caused by camera shake. In this mode (available only with SB-900, SB-800, SB-600, and SB-400), red-eye reduction pre-flash lights for approximately one second before main flash. Pupils in subject's eyes contract, reducing "red-eye" effect l sometimes caused by flash. Owing to one-second Red-eye shutter-release delay, this mode is not recommended reduction with moving subjects or in other situations in which quick shutter response is required. Avoid moving camera while red-eye reduction pre-flash is lit. Combines red-eye reduction with slow sync. Use for portraits taken against a backdrop of night scenery. Available only with SB-900, SB-800, SB-600, and SB-400 in Red-eye programmed auto and aperture-priority auto exposure reduction with modes. Use of a tripod is recommended to prevent slow sync blurring caused by camera shake. 193