e1: Flash Sync Speed

G button U A Custom Settings menu

Choose the flash sync speed.

Option	Description
[1/250 s (Auto FP)]	Flash sync speed is set to ¹⁄₂₅₀ or ¹⁄₂₀₀ s. With compatible flash units, auto FP high-speed sync will automatically be enabled at shutter speeds faster than ¹⁄₂₅₀ or ¹⁄₂₀₀ s. In modes P and A, auto FP high-speed sync will be activated if the actual shutter speed is faster than ¹⁄₂₅₀ or ¹⁄₂₀₀ s. If the flash supports auto FP high-speed sync, the camera can select shutter speeds as fast as ¹⁄₈₀₀₀ s. In modes S and M, the user can select shutter speeds as fast as ¹⁄₈₀₀₀ s when using flash units that support auto FP high-speed sync.
[1/200 s (Auto FP)]
[1/200 s]	Flash sync speed set to selected value, which can be from ¹⁄₂₀₀ to ¹⁄₆₀ s.
[1/160 s]
[1/125 s]
[1/100 s]
[1/80 s]
[1/60 s]

Caution: Auto FP High-Speed Sync

Depending on the shutter speed, horizontal lines may appear in pictures taken using auto FP high-speed sync when [1/250 s (Auto FP)] or [1/200 s (Auto FP)] is selected. This effect can be mitigated by:

choosing a slower shutter speed or
adjusting flash output.

Auto FP High-Speed Sync

Auto FP high-speed sync allows the flash to be used at shutter speeds as fast as ¹⁄₈₀₀₀ s. When [1/250 s (Auto FP)] or [1/200 s (Auto FP)] is selected, the camera automatically enables auto FP high-speed sync at shutter speeds faster than the flash sync speed. This makes it possible to choose the maximum aperture for reduced depth of field even when the subject is backlit in bright sunlight.