hi 5D shooters. Yesterday on an intense photoshoot with 2 models, strobes, makeup artist, time running out, the Canon 5D locked up with the dreaded f 00. It is not mine, I just helped out with the lighting rig for the shooter. The camera was attached with the Canon 28-135mm zoom s 80 f8 before the lockup. I switched to P mode and it was still dead. I turned off the camera and removed the battery for 15 seconds, put it back in and still the camera locked up. I then turned it off again removed the lens and replaced it, turned it on and finally everything was back to normal.
This f00 never happened before so is this something that Canon should check or is it something minimal with the lens ring being tight enough. Any advice from other 5D owners that have had this problem, please let us know