Have another question about settings on mk4:
Better to use a Highlight Priority or just underexpose frame by 1/3 or 2/3 steps for highlights saving ?
on my mk2 I'm always shoots with underexpose by 1/3 but now, maybe, this rule not so usable ?
Personally, I turn on the 'blinkies' and know when they start to appear I'd better stop or turn exposure down a smidge.
Canon raw you can recover some 'blinkies' just fine, if you didn't over do it, after years of shooting, its a 'feel' now for me when I can over expose but still recover. My understanding that other cameras (like Nikon) you can't over expose and pull back, they've set the exposure parameters slightly different, so over IS over, no wiggle room. Not bad, just different, so have to know your camera.