It would be interesting to know, of those here who are saying they would buy the new Sony....1) a mirrorless FF-sensor system camera like the Sony A7/R will be my only camera (other than smartphone)
 Would it be a supplementary camera, or your main camera?
 If it would be your main camera, what system would you be moving from? FF DSLR? APS_C DSLR? Smaller mirrorless?
2) Currently Canon 7D + all good EF-S lenses and a few good EF-lenses and a few speedlites. Will definitely have been my last DSLR system and my last APS-C camera.
That is almost exactly my kit too.
For my photography as amateur/enthusiast I need only one camera system at a time and I don't want to buy, own, store, insure, carry, learn and use more than one camera system in parallel.
ditto - we have some things in common, it seems!
Looking for a small light photographically fully capable FF-sensored mirrorless camera and a small set of "AF-only" lenses. [no manual focus ring, no manual focus gear, no distance window, but weathersealed @ IP67].
It certainly is a nice ideal, one I have thought a lot about.
Ideally a 24-70/85 f/4.0 IS for street/city/events/general purpose/walkaround, a 20mm/4.0 pancake mainly for landscape/city/architecture, a minimalist pancake 40mm/2.0 for street/people @normal angle, a 85/2.0 pancake for studio/portraits/concerts and a very compact and light tele lens for travel, say a 200mm/4.0 plus 1.4x teleconverter. Plus wireless ETTL flash trigger built into camera and 2 slave speedlites. Entire system for less than the price of a Leica M240 with 50/2.0. That's it. :-)
;-) indeed! But AFAIK pancakes are inherently lesser optically than a 'standard sized' prime, so I have gone off the pancake idea for now. Why get the big sensor and then add a lens that has more blur units? The Zeiss 35f2.8 that came out with the A7 weighs about 120g, nice.
If I had to buy tomorrow, it would be the A7R (preferred) or A7 ... depending on AF performance ... plus 24-70/4 plus EF-adapter. :-)
For me, right now, I'm starting to think the m43 or APS mirrorless is the right answer. I'm starting to think that, for any given budget, the better lens kit I could buy with a smaller sensor outweighs any theoretical advantage in IQ -- which will largely evaporate without a tripod anyway. And I'm not at all sure *just how much* weight and bag space are saved by going to FF mirrorless, once you include all the lenses for a decent system. Maybe it is a disappointing end game if the real goal was * large* savings in space and weight.