A few days ago I was playing around with my D750s live view, taking a few photos in A mode. Today in Lightroom 6 I noticed that the aspect ratio of the live view photos that I took are either in 16x10 or 16x9 ratio. In LRs EXIF panel the live view photos show the dimensions as 6016x3376, cropped shows the same. The photos I took using the viewfinder shows the dimensions as 6016x4016, cropped shows the same unless I have cropped the photos. Attached screenshot shows what I am describing.
Does the D750 only take 6016x3376 photos during live view? I couldn't find any setting, either in the manual or online, that I could change to take photos in 3x2 ratio.