Nikon D70s D70s User's Manual - Page 105
Flash Sync Modes, Flash Angle, ISO Auto
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Taking Photographs-Flash Photography Flash Sync Modes The following flash sync settings are available in P, S, A, and M modes: Flash sync mode Front-curtain sync Red-eye reduction Slow sync Description This mode is recommended for most situations. In P and A modes, shutter speed will automatically be set to values between 1/60 and /1 500 s. Red-eye reduction lamp lights for approximately 1 s before main flash, causing pupils in subject's eyes to contract and reducing "red-eye" effect sometimes caused by flash. Owing to 1 s shutter-release delay, red-eye reduction is not recommended with moving subjects or in other situations in which quick shutter response is required. Do not move camera while red-eye reduction lamp is lit. Flash is combined with shutter speeds as slow as 30 s to capture both subject and background at night or under dim light. Available only in P and A modes. Use of tripod is recommended to prevent blurring caused by camera shake. Combines red-eye reduction with slow sync. Available only Slow sync with red- in P and A modes. Use of tripod is recommended to prevent eye reduction blurring caused by camera shake. In S and M modes, flash fires just before shutter closes, creatRear-curtain sync ing effect of stream of light following moving subjects. In P and A modes, slow-rear curtain sync is used to capture both subject and background. Use of tripod is recommended to Slow rear-curtain sync prevent blurring caused by camera shake. Flash Angle The flash angle of the built-in Speedlight can cover the field of view of an 18 mm lens. It may not be able to light the entire subject with some lenses or apertures ( 101). ISO Auto When On is selected for Custom Setting 5 (ISO auto; 142), sensitivity will automatically be adjusted as required for optimal flash output. This may result in foreground subjects being underexposed in flash photographs taken at slow shutter speeds, in daylight, or against a bright background. In these cases, choose a flash mode other than slow sync or select mode A or M and choose a larger aperture. 95