Dario just sent me this incredible story:
“Hi, I just want to let you know that yesterday after accidentally damaging the mirror of my A55 with the Eclipse cleaning fluid, I took out the mirror and tried other materials to replace it while I’m waiting for a new mirror. Long story short, food wrap (!) works just almost like the Sony’s mirror: sometimes the AF guesses a little, but most of the time is perfect, and It’s a lot more transparent, so I really don’t get what sony tries to sell us with their 70€ Hi-Tech mirror…
However, food wrap it’s a bit opaque, so the pictures have a slightly soft-focus effect when a bright light hits it. In the next days I’ll try other transparent films: expecially I want to try the plastic protective film for cellphones, I think it’s gonna be a perfect alternative for those who don’t need 100% AF accuracy (although I think it’s almost the same) and improved ISO performance.
Here you can see some pictures of the conversion.
damaged mirror: http://img440.imageshack.us/img440/6361/dsc4616l.jpg
removed mirror: http://img715.imageshack.us/img715/7586/dsc4619z.jpg
food wrap: http://img812.imageshack.us/img812/8836/dsc4621l.jpg (this picture was taken with AF, with the “wrap mirror” already in place, notice the glowing effect on the reflections)
the wrapped mirror: http://img845.imageshack.us/img845/7899/dsc4654.jpg
mirror mounted: http://img252.imageshack.us/img252/8425/1003321v.jpg
Tell me if you are interested, so I will continue to inform you about this experiment.”
Damn, that sounds interesting!