Originally posted by osv as innovative as the k-3 is, it's engineering accomplishments don't begin to compare to what sony is doing with the a7 series bodies... sony created game-changers, that no other company has been able to touch, at a manufacturing price point that no dslr company can ever hope to compete with... why pay $1k more for a d810 that has the same pq as the a7r? why pay $1k more for a heavy pig of a d810, that is useless for manual focusing, because it's ovf?
I agree with you no other company provide you an FF sensor in a mirrorless interchangeable lenses body. Other do provide all sort of sensor size and do propose lot of mirorless. But not this exact combination. That's true. I agree that pentax did provide mirorless in APSC format & 1/1.7 format but both lack EVF, and that's not smart for Pentax to not have any EVF option for now. Other mirorless solution exist in 1", m4/3, APSC on other brand and they come with EVF and are cheaper than the Sony... The barrier to entry to provide a mirrorless solution with FF sensor? None for the body part, that's trivial... But you need to build a
solid native, without adapter lenses echosystem. And sorry nobody is here yet.
But what it make out of Sony with theses FE bodies? Just like another Fujifilm, Olympus or Pana... With a bigger sensor but slower, more expensive, bigger and far less choice on the native lenses offering. As for manual lenses, they all support without any problem. That's not unique or a differenciator.
Adding the converter + going A-mount is not something smart to me at least, and I think many will think the same... Except if you have theses a-mount lenses already. The converter make things bulkier and add to the body price, negatig most of the price difference. Add that it easy to get cheaper, high quality lenses in Nikon/Pentax/Canon classical mounts and the whole price adventage is against Sony.
I agree with you Sony has a pretty solid manual focus solution with this system and that fantastic for exclusive manual shooters. But AF is something many expect from their camera for something like 40 years.
For now if I want a small mirrorless with nice small lenses and a good overall experience, I'am to choose Fujifilm or Olympus.
For now if I want ultimate FF experience with a nice native choice of lenses, I think Nikon... Not Sony.
If I am a birder/wildlife/sport photographer I'am for sure to avoid thoses FE bodies at all cost. First the smaller form factor is not an asset but a drawback for big lenses. Second there lot of choice in Canon & Nikon echosystem. if I want the 150-600 and do wildlife with it, I'd consider switching to Nikon... Maybe Sony alpha if I didn't have the impression they more focussed on FE now... But no way I get an FE body.
No for FE I see your case, as strictly manual focus or as a good secondary body if money is not a problem and I can spend 3000$ on the dedicated lenses... This would not be because of the size, the lenses are too big. For size I would go Fuji. No this would be for an EVF on FF. If EVF is not critical for me, and still want FF, I'd favor Canikon, the lenses are no bigger for same apperture, and there far more native choices.