Sony Alpha SLT-A77V, Брошюра и характеристики

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Approximately 0.05 second minimum release time lag
Accelerated shutter response lets you
capture decisive moments with confidence.
An innovative electronic front curtain
shutter in the image sensor slashes shutter
release time lag to a class-leading 0.05
second
*
and produces less shutter noise
and vibration than a mechanical front
curtain shutter. If desired, a mechanical
front curtain shutter can be activated
through the MENU.
12 fps continuous shooting (in Continuous Advance Priority AE mode)
The world’s highest continuous shooting
speed* gives you a decisive advantage
when capturing sports action and fleeting
facial expressions. Every second, you
can capture up to 12 images with clarity
and precision at full 24.3 megapixel
resolution. Moreover, you can enjoy
the expressive power and flexibility of
interchangeable lenses without slowing
down performance. As with full-time
autofocusing, this extraordinary response
is made possible by innovative Sony
Translucent Mirror Technology.
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
Accelerated response on a full-time basis
* Among 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.
* Speed may vary depending on shooting conditions
and memory card in use.
Full-time Continuous AF
Accelerated full-time continuous phase-
detection autofocusing keeps your subject
sharply focused at all times. Even at
maximum continuous shooting speed and
during live-view movie shooting—thanks to
revolutionary Translucent Mirror Technology—
you can clearly capture sports action
and fleeting facial expressions without
resorting to manual focusing. The supreme
speed and precision of phase-detection
autofocusing is faster and more precise than
the contrast-detection AF systems employed
by competing cameras. It lets you effortlessly
capture dramatic moments in all types of
situations with professional-looking results.
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
a
77 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.
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 new 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, this new 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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