Quote Originally Posted by conropl View Post
You could not be getting a live image on your LCD if the mirror was down, the mirror would block the sensor if it was not up. You must be hearing the shutter.
I just confirmed (by removing my lens and looking at the mirror) that the mirror returns to the lowered position after the shot is exposed briefly before returning up. Why this is, I do not know and perhaps other bodies behave differently. And it happens after the exposure so most people would not notice the mirror slap as moving the camera for the image. However, since I'm planning on shooting a thousand or more photos from one fixed position the cumulative effect of having the mirror slap the housing could add up.

Anyone really know how to drive the USB commands outside of the documented set? I'd love to park the mirror up and leave the shutter open and yet still turn the sensor on and off when I hit the trigger. I could easily add an external shutter that's far more reliable than the one in my camera. Thanks!