Sony Intros Translucent Mirror Technology Tech On New DSLRs
The new Alpha models (SLT-A55V and SLT-A33) both use the new tech, which reportedly achieves the highest-level of auto focus speed for both still image and movie shooting. Using the new technology, the a55 and a33 models can continuously and quickly focus (with TTL phase-detection) while shooting stills and recording video—even in full HD, allowing desired moments to be captured in tack sharp focus, high-definition video. They can shoot continuously at up to 10 frames per second on the a55 (and up to seven on the a33), achieving shooting speeds that are the fastest in the industry for an APS-C size sensor-equipped interchangeable lens cameras under $1000.
Both bodies also have the company's own Exmor APS HD CMOS sensor, but it's obvious what Sony is focused on. By eliminating the need to raise and lower the mirror between shots, the technology makes it possible to achieve focusing while images are captured. Existing systems can only focus in the interval between image capture, limiting the ability to track fast moving subjects. The cameras also have continuous Advance Priority AE Mode and will automatically adjust for the best exposure to help you get the most professional looking results. That's enough to make any pro photographer stop and take notice.
The A55 has a 16.2MP sensor while the A33 has a 14.2MP sensor, with the former selling for $750 and the latter for $650 this September. The mid-range DSLR sector just got a lot more interesting.