Robi wrażenie!
A tu jakbym czytał naszego Akustyka:
Memo to Canon:

I know that designing a camera with mirror lock-up on a button, or on a soft key, or as part of the self timer function, must be really, really difficult, because after all these years and countless new camera models you still haven't been able to figure out how to do it.

May I humbly suggest that you send a fact-finding mission to Solms, Germany, to figure out how Leica has done it? It really can't be that difficult a technology to master. (Ps: The Schnitzel and Pils in the nearby town of Wetzlar is really good, and worth the trip, even if you can't figure out how to implement mirror lock up on a single button).