I have some issue with 650D. I cannot get live histogram in live view in photo mode (bu pressing INFO button). In video mode live histogram works fine.
I checked some instructional videos for 650D and with Canon firmware it does have live histogram as expected.
I also tried to turn camera without ML by removing memory card and turning camera on. Even then it does not show live histogram.
I did not use camera for a while so am not certain but I think I had live view in photo mode before. Is it me or something is wrong with the camera?