ummmm, i don't really use the lcd screen, unless its for live view focusing off a tripod (sometimes hand held...) but I wager I've gotten around 900-1000 shots per charge so far. Of course, easier to get more shots if you shoot rapidly over a short period of time too...
Tested the Zeiss 21mm f/2.8 Distagon this weekend. Diablo and his minions keeping me quite busy otherwise. I'd say that manual focus with this lens for general photography is not going to be an issue. You do have to watch if the focus is desired on something within 2 to 5 meters... but generally within the constraints of diffraction and stopping down, excellent to outstanding performance can be realized.
ZF.2 21/2.8, D800E, f/7.1, 0.8s off a tripod.
I think it looks good. One thing I've learned with regards to this lens is that even though f/8 has more depth of field, it is still substantially limited, so unless the corners are within the limits of the depth of field, they are not going to come out pixel perfect sharp.
I'd wager that for 3/4s of the frame, it looks excellently sharp. With the profile corrections in Lightroom, the lens probably ends up being around 22 to 22.5mm after the distortion is fixed and the light fall off at the edges at f/2.8 is taken care of.
1/500s, f/7.1
Color, sharpness, contrast, detail all outstanding in typical Zeiss fashion. This shot had the sun on the left side of the image, it was burning hot. So the sky on the left side looks all washed out. Back with older generation digital cameras, most likely the sky will be washed out, recoverable in raw - just a testament to the dynamic range of the sensor. At a per pixel levle, the detail is there, which includes the leaves on the trees on the lower right corner.
It remains my opinion, and my honest opinion, that the Leica M9 still captures the nicest blues of all the cameras I've used. Not sure what the folks in Solms did, but it sure captures the vibrancy in skies really well.
I'm testing through my zeiss collection now, and a quick test of all the primes this weekend is indicative that all of them can keep up with the 36MP sensor. 21/2.8, 25/2.0, 35/1.4, 50/2 and 100/2.