I can't keep the mirror open whenI am in standby.. Even with manual focus set it seems to last a minute.. maybe less.. Can I keep it indefiedtly open? I also have MagicLantern but can't find a suitable option.
Any help?
What is the maximum time I can get it to stay open.. and how?

canon menu auto power off...

Great.. thanks... It worked.. at least it kept it open for 15 minutes or so...It's enough for set work. Don't know how I missed ti.. thanks again.
M