>What justification do camera owners have to buy one of >these? > >Shooting large weddings? > >Shooting for extended periods? What else? > >And what are burdens of weight and bulk added to the camera? > >At my current rate, I only charge my D7000 battery once in a 3 >or 4-week span.
I spend a huge amount of time in some pretty remote locations, so 128 gigs of card space, and lots of battery are paramount. I just saw this in my D7000 manual that the supplied Lithium battery should not be used below 32F!? That precludes me from shooting 90% of my work. Another reason to use good old Alkaline batteries in the MBD11. I notice that after about 10 minutes in 20F ambient temperature, my Main battery Indicator shows almost completely drained? Ouch! During this same time the Alkaline secondary's were un-affected.