Sony SLT-A77V Brochure & Specs page 6

Accelerated response on a full-time basis
12 fps continuous shooting ( in Continuous Advance Priority AE mode )
Full-time Continuous AF
Accelerated full-time continuous phase- The world's highest continuous shooting
detection autofocusing keeps your subject speed* gives you a decisive advantage
sharply focused at all times. Even at when capturing sports action and fleeting
maximum continuous shooting speed and facial expressions. Every second, you
during live-view movie shooting—thanks to can capture up to 12 images with clarity
revolutionary Translucent Mirror Technology— and precision at full 24.3 megapixel
you can clearly capture sports action resolution. Moreover, you can enjoy
and fleeting facial expressions without the expressive power and flexibility of
resorting to manual focusing. The supreme interchangeable lenses without slowing
speed and precision of phase-detection down performance. As with full-time
autofocusing is faster and more precise than autofocusing, this extraordinary response
the contrast-detection AF systems employed is made possible by innovative Sony
by competing cameras. It lets you effortlessly Translucent Mirror Technology.
capture dramatic moments in all types of
situations with professional-looking results.
Approximately 0.05 second minimum release time lag
Accelerated shutter response lets you curtain shutter. If desired, a mechanical
capture decisive moments with confidence. front curtain shutter can be activated
An innovative electronic front curtain through the MENU.
shutter in the image sensor slashes shutter
release time lag to a class-leading 0.05
* Speed may vary depending on shooting conditions
second and produces less shutter noise
* and memory card in use.
and vibration than a mechanical front
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Translucent Mirror Technology
Sony Translucent Mirror Technology
revolutionizes interchangeable-lens
photography by enabling simultaneous
focusing and image capturing on a
full-time basis. Unlike competing cameras
that swing a mirror to either direct light
toward the AF sensor or the image
sensor–one at a time, the a77 continuously
directs light to both sensors simultaneously
via a stationary translucent mirror. This
breakthrough enables leading continuous
shooting speed, accelerated full-time
continuous phase-detection autofocusing—
even while shooting HD movies–and
smooth uninterrupted live-viewing on the
finder and rear monitor during single shot,
continuous and movie shooting. Quite
simply, Translucent Mirror Technology
significantly improves overall performance
and leaves the competition behind.
* A mong interchangeable-lens cameras with an APS-C
sensor as of August 2011.
Notes:
Continuous shooting speed may be slower depending on
shooting conditions. In Continuous Priority AE Mode, the
aperture is fixed at F3.5 or the maximum aperture of the
lens, whichever is smaller. Continuous shooting speed
( fps ) lowers when high ISO NR function is On.
70-400mm F4-5.6 G SSM ( SAL70400G ) , Continuous Advance Priority AE, 1/4000 sec., F5.6, ISO 1250, Auto white balance
19-point AF system with 11 cross sensors
The new phase-detection autofocusing shoot. Depending on your needs, you can
system spreads 19 AF sensors over a wide select one of four AF area modes: Wide
AF area to increase your framing freedom ( all 19 sensors ) , Spot ( central sensor ) ,
Local ( any selected sensor ) , or Zone ( right,
and keep moving subjects in focus. It
center, or left zone ) . Four AF modes are also
includes 11 cross sensors that deliver more
accurate and reliable tracking than sensors selectable from the focus mode dial: AF-A
( Auto ) , AF-C ( Continuous ) , AF-S ( Single shot )
with only vertical or horizontal detection
and Manual. In addition to AF ( Auto Focus ) ,
can achieve. Additionally, this new AF
the camera also provides DMF ( Direct
system improves autofocusing performance
Manual Focus ) and Manual focus modes.
in low light conditions to ensure precision
focusing wherever and whenever you
Easy operation even during manual focusing
The camera quickly and comfortably meets magnification of the image at the press of
a button, and Direct Manual Focus ( DMF )
your needs during both auto and manual
focusing. Prompt switching between settings are selectable during autofocusing.
autofocusing and manual focusing is An AF Micro Adjustment function also allows
as simple as pressing the AF/MF button. minute manual adjustment of focusing
Manual focusing is aided by a Focus distance, along with registration of up to 30
Magnifier function that provides up to 11.7x sets of lens adjustment settings.
Cross sensors
AF sensors
Object Tracking Focus
Various advances come together in the
a77 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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