According to foreign media reports, Sony said in an official statement: all future Alpha SLR cameras will be designed for semi-transparent mirror technology.
Sony first time since the beginning of semi-transparent mirror technology A33/A55 camera introduced in 2010 and will be launched this year, a new generation of semi-transparent camera A77. Sony said the A33/A55 with the pilot, while the A77 will solve all known problems with new features come out.
According to the current related rumors, A77 will carry 24 million pixels Exmor APS HD CMOS sensor, magnesium alloy body, the new electronic viewfinder and up to 10 million sensitivity, support CF / SD card, single-battery life to 1000 , The price of 900-1200 dollars.
In addition, Nikon and Olympus recently also have a CLAA133WA01A was published. Canon 60 from the last century, began trying to semi-transparent mirror technology, but ultimately not universal. Reaction, according to Canon, its problems are twofold: 1. only 1 / 3 of the light is reflected to the viewfinder, so viewfinder light to dark than the normal 2 / 3. In a small aperture, the eye is difficult to adapt such a dark viewfinder. 2. imaging light must pass through the mirror. With the increasing use of time, inevitably become dirty mirror, the light is bound to adversely affect, affect the final image quality.
Sony's semi-transparent mirror in the design, Laptop Accessories replaced the traditional optical viewfinder, 1 / 3 of the reflected light only for auto focus system, so as to solve the problem of dim viewfinder. But its impact is still to face the mirror image quality problems.
Sony said that it would resume through the image processor to reduce by-pass due to loss of quality light, but how to face the mirror itself (dirty) of light caused by the physical effects? We still need to wait and see.
