If you've suffered a missed
photo opportunity due to the short time your digital SLR takes to get its
mirror out of the way, then Sony reckons it has the answer. The mirror inside
the new α33 and α55 digital cameras doesn't move out of the way at all, it's
just semi-transparent and simply allows the light from the lens through to the
CMOS sensor while also redirecting some to the camera's autofocus sensor.
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