e1: Flash sync speed

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 1/4000 s (or 1/2000 s if [Electronic front-curtain shutter] is selected for Custom Setting d6 [Shutter type]). In modes S and M, the user can select shutter speeds as fast as 1/4000 s when using flash units that support auto FP high-speed sync (or 1/2000 s if [Electronic front-curtain shutter] is selected for Custom Setting d6 [Shutter type]). When using the built-in flash, flash sync speed is set to 1/250 or 1/200 s and auto FP high-speed sync will not be activated. If it is set to [1/250 s (Auto FP)] and the shutter speed is faster than 1/200 s and slower than 1/250 s, the guide number will drop.
[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. The shutter speed will be set to the selected flash sync speed in the S and M modes if a faster shutter speed is selected.
[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

When using an optional flash unit that supports auto FP high-speed sync, the shutter speed for flash photography can be set as fast as 1/4000 s (or 1/2000 s if [Electronic front-curtain shutter] is selected for Custom Setting d6 [Shutter type]). 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.