Accelerated response on a full-time basis – Sony SLT-A77VM User Manual
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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)
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. 
Accelerated response on a full-time basis
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 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. 
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