My MarkIII started locking up when filming a concert, then started showing only a white screen or going pink or red
or green when taking pictures. Sent it back to Canon and say it a warranty issue and are replacing the Main Board.
Only problem is after a week and a half no one can tell me when they will get the parts to fix it. The repair loop
has no part to fix this problem. I'm really disappointed with this set of issues, and will probably dump the MarkIII
when I get it back, whenever that will be... purchased in Nov. 2012. No parts at the repair facility for a possible
known issue is unexcuseable...... my customers would not accept such a situation.