Sony α SLT-A58 Instruction Manual page 138

(Flash Off)
(Autoflash)
(Fill-flash)
(Slow Sync.)
(Rear Sync.)
(Wireless)
42
Does not fire even if the flash is raised.
• You cannot select this item when the mode dial is set to P,
A, S, or M. If you do not want to use the flash in these
modes, push the flash down.
Fires in dark environments or when shooting towards bright
light.
Fires every time you trigger the shutter.
Fires every time you trigger the shutter. Slow sync shooting
allows you to shoot a clear image of both the subject and the
background by slowing the shutter speed.
Fires right before the exposure is completed every time you
trigger the shutter.
Fires an external flash (sold separately) that is off the camera
and away from it (wireless flash shooting).
Using the flash