Maybe somebody can answer this question: I have set my custom settings such that when I half press the shutter release the camera will auto focus as well as light meter; C1=ON. I find this very useful, especially when I want to re-frame the shot but maintain focus and proper exposure of the original object, for example a face. This is all working well and easy to understand. Now add to this the built-in or the SB-910 flash and all is well and easy to understand as long as I do not re-frame the shot. However, shooting as described above with flash and re-framing the shot I do not understand how the D800-SB910 achieves proper exposure since it does not fire a pre-flash before I re-frame. 1. Does it simply ignore the initial light metering and do a normal pre-flash-meter-flash exposure in the new location. 2. Or does it use the initial light metering, without a pre-flash, to calculate required flash-lumens to achieve desired exposure of the object selected before re-framing.