Flash Sync Modes Flash sync mode
Description
Front-curtain sync
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
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.
Slow sync
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.
Slow sync with redeye reduction
Combines red-eye reduction with slow sync. Available only in P and A modes. Use of tripod is recommended to prevent blurring caused by camera shake.
In S and M modes, flash fires just before shutter closes, creating 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. Rear-curtain sync
Flash Angle The flash angle of the built-in Speedlight can cover the field of view of a 20 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. If a high sensitivity is required, this may result in the background being overexposed when the flash is used at slow shutter speeds (slow sync), in bright daylight (daylight sync), or when the background is brightly lit.
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Taking Photographs—Flash Photography
The following flash sync settings are available in P, S, A, and M modes: