I have the a7r2 with software version 4.01 I watched your video with interest because of two things. 1: I noticed that when I change exposure of a scene, my histogram does not move. It moves fine on your camera. It moves fine on my Lumix cameras. 2: In my white balance settings, custom 1,2,3, the set word isn't there. Again, it is there on my 2 Lumix cameras. I have the 24-105 f4 G lens with version 01 software, if that makes any difference. Any ideas?