Sony A390, DSLR-A390L MENU button t 1 t [AF illuminator] t [Off], MENU button t 1 t [Red eye reduc.] t [On]

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The flash range
The range of the built-in flash depends on the ISO sensitivity and aperture
value. Refer to the following table.
The AF illuminator
• AF illuminator does not operate when [Autofocus mode] is set to
(Continuous AF) or the subject is moving in (Automatic AF). (The
or indicator lights.)
• The AF illuminator may not operate with focal lengths of 300 mm or longer.
• When an external flash is attached, the AF illuminator of the external
flash is used.
To deactivate the AF illuminator
MENU button t 1 t [AF illuminator] t [Off]
To use the red-eye reduction
The red-eye reduction reduces the red-eye phenomenon by providing pre-
flash (low-flash light) a few times before shooting when using the flash.
MENU button t 1 t [Red eye reduc.] t [On]
Aperture F2.8 F4.0 F5.6
ISO
setting
AUTO 1.4 – 7.1 m (4.6 – 23
feet)
1 – 5 m (3.3 – 16
feet)
1 – 3.6 m (3.3 – 11
feet)
100 1 – 3.6 m (3.3 – 11
feet)
1 – 2.5 m (3.3 – 8.2
feet)
1 – 1.8 m (3.3 – 5.9
feet)
200 1 – 5.1 m (3.3 – 16
feet)
1 – 3.5 m (3.3 – 11
feet)
1 – 2.5 m (3.3 – 8.2
feet)
400 1.4 – 7.1 m (4.6 – 23
feet)
1 – 5 m (3.3 – 16
feet)
1 – 3.6 m (3.3 – 11
feet)
800 2 – 10 m (6.6 – 32
feet)
1.4 – 7.1 m (4.6 – 23
feet)
1 – 5.1 m (3.3 – 16
feet)