Sony SLT-A77VM - Manual (Page 11)

70-400mm F4-5.6 G SSM (SAL70400G), Continuous Advance Priority AE, 1/4000 sec., F5.6, ISO 1250, Auto white balance
Cross sensors
AF sensors
Easy operation even during manual focusing
The camera quickly and comfortably meets
your needs during both auto and manual
focusing. Prompt switching between
autofocusing and manual focusing is
as simple as pressing the AF/MF button.
Manual focusing is aided by a Focus
Magnifier function that provides up to 11.7x magnification of the image at the press of
a button, and Direct Manual Focus (DMF)
settings are selectable during autofocusing.
An AF Micro Adjustment function also allows
minute manual adjustment of focusing
distance, along with registration of up to 30
sets of lens adjustment settings.
19-point AF system with 11 cross sensors
The phase-detection autofocusing system
spreads 19 AF sensors over a wide AF
area to increase your framing freedom
and keep moving subjects in focus. It
includes 11 cross sensors that deliver more
accurate and reliable tracking than sensors
with only vertical or horizontal detection
can achieve. Additionally, the AF system
improves autofocusing performance in
low light conditions to ensure precision
focusing wherever and whenever you shoot. Depending on your needs, you can
select one of four AF area modes: Wide
(all 19 sensors), Spot (central sensor),
Local (any selected sensor), or Zone (right,
center, or left zone). Four AF modes are also
selectable from the focus mode dial: AF-A
(Auto), AF-C (Continuous), AF-S (Single shot)
and Manual. In addition to AF (Auto Focus),
the camera also provides DMF (Direct
Manual Focus) and Manual focus modes.
Object Tracking Focus
Various advances come together in the
a
77 to enable swift, accurate tracking of
fast-moving subjects. Once you designate
your subject on the viewfinder or rear LCD,
Tracking Focus utilizes powerful predictive
focusing algorithms and Sony’s original
subject recognition technologies to track
your subject’s every move with speed and
precision. This performance is supported by
blazing-fast BIONZ
® image processing and
19 autofocusing points that are spread
over a wide area to better keep moving
subjects in focus.
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