D600: A gazillion EV of dynamic range isn't worth squat if your camera won't focus or meter properly Locked

I would agree that using live view mode in dim light or when you need fast focusing is not the best idea.  The camera uses a different method for focusing in LV mode than it does when not in LV....and it's always going to be more reliable and faster when not in LV mode.  So far I've not had any bad experiences in dim light (but I rarely use LV).

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