Image credit: TheSyberSite analyzed
TheSyberSite (Click here) investigated the bugs and limitations of the Sony A55. And he gave a particular attention to the translucent mirror construction He actually removed the A55’s mirror!). The mirror is made by flexible plastic (See the picture on top). Also without the mirror you can use the A55 to take picture (of course autofocusing will not work!). It would have been nice to see if there is some kind of improvement in the image quality. That’s why I contacted the author of the test. He said he will post such a comparison soon.