I was in Hamburg today and looked down onto the harbor in the nicest winter evening light and I thought "Gee, that would make a nice picture".
So I set up the tripod and put the 18-55 EF-S onto my 20D. All the sudden I noticed I couldn't focus anything anymore. Looking at the display, it also didn't show my CF card, and I couldn't access any menu. So I turned the camera off and nothing happened. The shutter speed, f value etc. was still in the display. The camera was basically frozen. I tried the On/OFF switch a couple more times, changed lenses, put the batteries in and out and nothing happened.
The thing finally came back to life after I had put off the battery grip at home later tonight. Now the BG-E2 is attached to it again, and it works like nothing has happened.
I had used the camera all day and it had worked just fine. Dunno how it came to fail so suddenly.
Has anybody had similar experiences like that? Is this normal?