High-Speed Sync Photography (Hss) - Sony HVL-F45RM Mode D'emploi

High-speed sync photography (HSS)

High-speed sync photography
High-speed sync photography eliminates the flash sync speed
restrictions and enables the flash unit to be used through the entire
shutter speed range of the camera. An increase in the selectable
aperture range allows flash photography with a wide aperture,
leaving the background out of focus and accentuating the front
subject. When photographing a scene, where the background is very
bright and the photograph is likely to be over-exposed, at a wide
f-stop in A or M shooting mode of the camera, you can still adjust the
exposure to the proper level by using the high-speed shutter.
To turn off the HSS function, follow the instructions for Quick Navi
settings (page 20) and change the setting option for [HSS] to [OFF].
Flash sync speed
Flash photography is generally associated with the maximum
shutter speed referred to as the flash sync speed. This restriction
does not apply to cameras designed for high-speed sync (HSS)
photography, since they allow flash photography at the maximum
shutter speed of the camera.
Notes
If you set the shutter speed of the camera faster than 1/4000 and take a photo,
bright and dark streaks may appear on the photo.
It is recommended that you set the flash power level to at least MANUAL 1/2 for
photography.
Normal flash photography
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