I thought I would share this just to make sure that everybody is benefiting from this preference setting. Like many of the options in ML, Prefs>LV Display Presets opens a new world of goodness when you understand what it actual does for you. Set this option to allow you view up to 4 unique LiveView display settings that can be cycled thru using the INFO button (600D).
This example is for demo purposes on a 600D. Setup each preset with your preference.
ML Prefs>LV Display Presets
Set the value to 2 (4 is max value)
Jump over to Overlay menu in ML
Set Zebras ON
Set Vectorscope ON
Go to Global Draw
At Global Draw setting notice the little Q
Hit Q - Now you are in the second display prefs preset
Set Magic Zoom to ON
Set Crop Marks to ON (also can setup whether to display cropmarks in PLAY mode here)
In LiveView toggle between LV Display Presets using the INFO button
Make sure you pay attention to which display preset you are using and when editing each display preset. (0-3)
You can setup 4 display prefs as you see fit. Immediately go to your camera and start using this great feature.
