Last bit of shooting its been pretty good, esp outdoors. I set minimum to 1/60 or like 1/250+ (driving), clip green... also the raw histo will tell you where you are in terms of ETTR so something like +/- 1 is alright without auto.... I also noticed the preview seems a lot darker than the shot when imported to light room. I was thinking a bunch of shots were way worse and then pleasantly surprised when editing.
Then again sometimes it will take a shot with bright light and blow the hell out of it... I had this prob on waterfalls most noticeably, indoors it would occasionally pump the ISO up too high ignoring that I'm shooting a well lit subject for the background. Not sure if changing metering mode helps, it didn't seem to. So I'd have mad motion blur of something moving on a stage but the darkened background lit to daylight levels (bleh!)
When dual ISO was picked it usually made sense though unless it did the flip flop like 800/100, then my shot turns out half res for 90% of the pic and really dark, needing +5 in LR.
I.e. wtf did AETTR+DUAL do here:http://www.filedropper.com/dual3285