You’ve probably read plenty of articles touting the benefits of Sony’s translucent mirror technology (e.g. high fps, AF for video, quietness, etc…), but what about the cons? One of the main downsides to having a translucent mirror is that the light hitting the sensor passes through an additional layer (the translucent mirror), which reduces the amount of light and the image quality.
Ray over at TheSyberSite attempted to quantify how much the mirror affects the resulting image quality by removing the mirror on his A55 and comparing the resulting photos. He confirmed that about 1/2 stop of light is lost, and estimates that 5% of the detail in each shot is lost due to the mirror. Head on over to the article for some side-by-side comparisons.
Secrets of the Sony A55 (via sonyalpharumors)
Sony and Olympus are headed in very different directions when it comes to DSLR cameras. While Olympus may be looking to step out of the DSLR market in favor of EVIL cameras, Sony is opting to stay put while transforming its line of DSLRs into translucent mirror cameras. During a Sony event in Zaragoza, Spain, company representatives confirmed to Quesabesde that all future Alpha DSLRs will have the translucent mirrors found in the A33 and A55.
If Sony succeeds in this technology shift, it will be quite a change from the 1960s, when Canon introduced their version of the translucent mirror for film cameras but ended up going back to normal mirrors before long.
(via Photo Rumors)
Image credit: Sony Alpha DSLR-A100 and accessory by Jacky W