Originally posted by windhorse;3158398(edited for brevity): Does....mean we will....fork out....for a big, high DSLR like the Nikon D810 and Canon 5DS?
If the mock-up at CP+ is anything to go by it *will not* be big. It is only marginally bigger then the K-5 and considerably smaller then the D750. It is only the size of the pentaprism, and (necessarily) the width of the top of the mirror box (which tapers in markedly on the K-3), which makes it appear to "dwarf" the FA31
Compare these two photos, make some measurements, and come back if you disagree. I didn't get the angle of the comparison shot exactly right but they are taken with lenses with essentially the same angle of view to avoid parallax errors.
The image from CP+ was taken by Forum member Vizke with a compact camera - 35mm equivalent 73mm according to the EXIF. Mine was taken with a K-S1 and my A50/1.2