I've discovered a problem with my 50D and every nightly build since 2014-03-10. When I want to change shutter or aperture over the scroll wheels, nothing happens on the main display. The hole image on the screen is not changing at all, including the displayed shutter and aperture values. On the b/w display on the top of the camera, the values are changing correctly.
When I switch to the gallery and go back to LiveView the exposure is getting applied correctly.
In summary, it seems that rotating the scroll wheels doesn't trigger a refresh of exposure anymore.
Example:
I power on the camera and launch LiveView.
Main Display: f/2.2, 1/660
Top Display: f/2.2, 1/640
I use the scroll whell to increase the aperture value
Main Display: f/2.2, 1/660
Top Display: f/9.0, 1/640
I open the gallery and switch back to LiveView
Main Display: f/9.1, 1/660 (the new aperture is now getting applied physically, too)
Top Display: f/9.0, 1/640
I tried the following:
- changed several settings in terms of exposure (Exp. Lock and so on)
- formatted the card and completely reinstalled ML
- tried over 15 builds (problem doesn't occur < 2014-03-10 < problem occurs)
What's the cause?