Sony SLT-A99 Manual

The functions that can be selected with the Fn button are as follows:

Selects the automatic shooting mode.
(Intelligent Auto/Superior Auto)

Selects an appropriate mode from among the Scene Selection 
preset settings to suit shooting conditions.
(Portrait/Sports Action/Macro/Landscape/Sunset/Night 
Scene/Hand-held Twilight/Night Portrait)

Selects the exposure mode for movie recording to suit your 
subject or your effect.
(P/A/S/M)

Sets the speed for continuous shooting.
(T10/T8)

Sets the drive mode such as continuous shooting.
(Single Shooting/Cont. Shooting/Self-timer/Bracket: Cont./
Single Bracket/WB bracket/DRO Bracket/Remote Cdr.)

Sets the flash mode of a flash (sold separately).
(Flash Off/Autoflash/Fill-flash/Rear Sync./Wireless)

Selects the focus mode.
(Single-shot AF/Automatic AF/Continuous AF/Depth Map 
Assist Continuous AF/DMF/Manual Focus)

Selects the area of focus.
(Wide/Zone/Spot/Local)

Keeps the focus on a subject while tracking it.
(Off/On/On(Tracking focus w/ shutter))

Automatically captures people’s face(s) with the optimal 
focus and exposure./Shoots when a smile is detected.
(Face Detection Off/Face Detection On (Regist. Faces)/Face 
Detection On/Smile Shutter)

Analyzes the scene when capturing a face and saves another 
image with a more impressive composition.
(Auto/Off)

Sets the sensitivity to light. The larger the number, the faster 
the shutter speed.
(Multi Frame Noise Reduct./ISO AUTO/ISO 50 to 25600)

Selects the method for measuring brightness.
(Multi segment/Center weighted/Spot)