Including the 8 batteries, it increases the weight by 460 grams travel. The trigger lock locks only those controls that the camera is working
with the MB-D12 further off he can not be.
The MB-D12 extends for my taste a bit far in the front plane of the camera, although excellent for vertical shooting,
for landscape shots, this is for me but a little getting used to.
Still the best grip I've ever had, the trigger and the rocker correspond to those of the D800 in the operating sense and
provide highest quality. I often take pictures in portrait format is worth the MB-D12 for me, it were not so,
I would have him but not necessarily have to the camera. The additional power source is the D800 of course good,
but for that I would rather first take up extra batteries.