Sony SLT-A99V Specifications page 25

AF-D mode
Continuous autofocusing is provided
by a new AF-D ( Depth Map Assist
Continuous AF ) mode that delivers
precision focusing for virtually any
subject. This mode utilizes the 19-point
( 11 cross-point ) phase detection AF
sensor to keep subjects sharply focused
in most shooting situations. When fast-
moving subjects demand wider, denser
area coverage than the 19-point AF area
can provide, the 102-point focal plane
phase detection AF sensor lends reliable
support. This combination of 121 AF
"eyes" ( 19+102 ) from two highly precise
phase detection AF sensors provides
a clear performance advantage over
single-sensor AF systems.
Note: AF-D mode requires a compatible full-size lens.
The range of supported lenses will gradually expand
through firmware updates.
AF Range Control
Subject tracking can be limited to a
specified range of distance so the
camera stays focused on your subject
even if background and foreground
objects enter the AF frame. To stay
focused on a drummer even when
guitarists cross the stage, for example,
or to keep an athlete in focus through a
wire fence, simply press the dedicated
AF Range button, use the front and
rear dials to set the minimum and
maximum distances from the camera,
and enjoy highly accurate focusing that
disregards everything but your subject.
A user-friendly graphic indicator clearly
displays the selected range as well as
the point, in terms of distance, that is
currently in focus.
Enhanced Tracking Focus
Various advances come together in the a99 to enable accurate tracking of fast-
moving subjects. Once you designate your subject and press the shutter button
halfway ( S1 ) , Tracking Focus activates and utilizes predictive focusing algorithms and
Sony's original subject recognition technologies to track your subject's every move with
speed and precision. This continuous, uninterrupted performance, made possible by
Translucent Mirror Technology, is supported by blazing-fast BIONZ image processing
and 19 autofocusing points. When AF-D mode is selected, an additional 102 assist
autofocusing points are activated to further expand AF coverage, helping to better
keep moving subjects in focus.
AF area modes
Four AF area modes are provided to meet various needs. You can select
Wide ( all 19 sensors ) , Spot ( central sensor ) , Local ( any selected sensor ) or
Zone ( right, center, or left zone ) as well as 102-point assist AF points when
in AF-D mode. Various AF modes are selectable—AF-S ( Single shot ) , AF-A
( Auto ) , AF-C ( Continuous ) , AF-D ( Depth Map Assist Continuous AF ) . Also
selectable are Manual focus mode and DMF ( Direct Manual Focus ) , which
now provides access to the Peaking function for greater focusing precision.
Wide
Local
6fps continuous shooting
The Continuous Advance Priority AE
mode lets you capture the decisive
moment at full resolution with clarity
and precision by shooting at speeds
up to 6fps. You can also raise the
continuous shooting speed to approx.
10fps by entering the Tele-zoom High
Speed Shooting mode.
sharpen your focus
Spot
Zone
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