COLOGNE, Germany--Sony's two translucent-mirror cameras are going to get a big brother, an advanced model geared for enthusiasts, the electronics giant said Tuesday.
The Sony Alpha 33 and 55 arrived earlier this year sporting an SLR look but lacking a mirror that flips out of the way when it's time for the photo to be taken and the light to go to the sensor rather than the viewfinder. Instead, these models use a translucent mirror that sends most of the light to the sensor but shares some with an autofocus subsystem. Sony's SLT (single-lens translucent) cameras use an electronic viewfinder; there's no optical viewfinder.
One result of the SLT designs is a camera that can shoot 10 frames per second with autofocus continuously engaged and that can use autofocus even when shooting video. Another result is demand for a55 and a33 that pushed back until 2011 availability of Sony's A560, which uses the same image sensor.
So it's probably no surprise that Sony is pushing ahead with further models. … Read more