Problem with plus/minus buttons on 5DII
I'm having a problem with my minus (-) magnification button on my 5DII. When I'm reviewing a shot and use the plus button to enlarge it on the LCD, when I then hit the minus button to go down in magnification it turns off the preview screen and just goes back to normal shooting mode. Also, the minus button should let me be able to view the shots as thumbnails on the screen too, and it won't. Anyone have this problem...any solutions? Thanks.