>>3394524Got off my arse and just did a few tests of the Luna Pro vs D800.
The Luna seems to be within .5-1 stop of the Nikon, although some of the error is probably caused by the fact that the user has to determine where to put the computer wheel based on the exposure reading.
I'd say that on the 675 batteries it's more than close enough for most work. I might be a little wary about slides...