Shot today in a dark bar with the 5DII and the Zeiss 21mm lens. At home I realized that the images look more grainy than I expected. I thought I set the camera to ISO 100. But all shots were between 1600-6400 ISO. I even shot bracketed for HDR and found that the camera resorted to ISO bracketing (I never would use).
Looked at the camera and it still was set at ISO 100. But as soon as I used live view it used ISO bracketing and got these high ISO values. Turned out the live view was set to movie mode and the movie mode uses other settings than in non live view mode. Ouch!
Would not say the shots are completely lost but not what I wanted. They look like very grainy high ISO film.