Sony ECM-M1 Compact Camera-Mount Digital Shotgun Microphone - Manual (Page 39)

Help Guide
Flash
HVL-F60RM/HVL-F60RM2/HVL-F46RM
High-speed sync photography <HSS>
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.
A: High-speed sync photography
B: Normal flash photography
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.
Note
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.
The minimum value available for specifying the flash power level varies in accordance with the high-speed sync setting.
When [ON] is selected: 1/128
When [OFF] is selected: 1/256*
4-735-263-12(1) Copyright 2018 Sony Corporation
Press the Fn button, select [HSS] on the Quick Navi screen, and then select [ON] or [OFF]. 1
For HVL-F46RM, the minimum value is limited to 1/128 when [WL OFF] is selected for wireless mode. *
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