No contradiction at all. Here's what I'm trying to say:
As far as rumors (or even an official but sparse announcement) is concerned, 36 is just a number.
The sensor could still be the oldest and worst 36 MP sensor, or it could be the newest and best 36 MP sensor. It would be a slap in the face to Pentax if "all" they could get from Sony was leftover A7R sensors. No need to "be careful what I wish for", the D810 sensor is better, hands-down, and has none of the issues we're discussing. Those are all mirrorless issues, IMO.
So, I don't think any of the issues that plagued Sony's older FE cameras are necessarily going to carry over to a sensor given to Pentax, other than the actual sensor's performance. For example the shutter shock was mainly due to the extremely light weight of the camera, and the shutter's lack of finesse, I guess you could say. Or for example the added thicker glass layers that sony put OVER their sensor, since it is a short flange mirrorless ILC, could have been the cause for any weird reflections.
I'm just saying that, whatever sensor they do get, I hope it's got dynamic range and high ISO performance that makes the 645Z a proud older sibling, and the K-3/K-5 proud younger siblings. And if they don't get the newer version of the sensor, they'll be at a disadvantage. Oppositely if they do get the newest possible 36 MP sensor, I firmly believe they won't necessarily face any of the other image quality problems that have been brought up here, nor do I think they'd be at a significant pricing disadvantage compared to say, a Nikon D810. Since as I mentioned Nikon's production cost on this newest camera is low enough for them to offer it "Grey" as low as $2100.
Again, as I said, surely this leaves plenty of room for Pentax to get a cutting-edge, problem-free sensor and still offer it in an affordable package.
---------- Post added 11-22-15 at 12:55 PM ----------
I'm not trolling, I'm cheering and hoping for the best here!
However, I'm sorry if my over-simplifications are making my assertions sound asinine. I understand that.
There probably isn't just a warehouse shelf full of un-used A7R sensors. However it could still be a matter of which sensor was originally agreed upon, to be stocked / supplied at a later date.
Keep in mind, also, that Sony's product cycle is shorter than two years for their high-res mirrorless flagship. And the Pentax FF has been many years in the making; surely the sensor was decided upon quite a while ago. It could very well be that Sony's original A7R sensor was slated for the Pentax FF, and it is only Pentax' own delays that has caused the camera to arrive later than the D810 and A7R II.
As I've stated elsewhere, one source of my concern in this regard is the K-3 and K-3 II sensor. Pentax seems to have been "stuck" with the same 24 MP sensor from Sony, a sensor that is still less preferable to quite a handful K-5II/s owners actually, based upon real-world results and not laboratory testing. (Although the lab tests do agree with real-world findings, in this case)
Meanwhile, Sony's other buyer of 24 MP APS-C sensors, Nikon, has been swinging for the fences with their latest 24 MP iterations and delivering very impressive results for both dynamic range and high ISO. While the K-3 and K-3 II both lag behind the K-5II for dynamic range and high ISO, (depending on who you talk to) ...Nikon's D5500 and D7200 sensors actually approach / match Nikon's full-frame 24 MP sensors for dynamic range, and surpass all their older (even 12-16 MP) sensors for high ISO.
Either way, please keep in mind that I'm only here because I'm hoping for the best and would really like to own a K-1. (?) If it sounds like I'm being pessimistic, that's just what I personally believe is the best way to push companies to do better; it's not meant to be an insult or a needlessly negative remark.
---------- Post added 11-22-15 at 01:04 PM ----------
Ideally, this would be awesome. If the D800 / A7R sensor is simply "gone", and any 36 MP sensor that a factory might put into production will be the latest version.
Kind of like when Doctor Who gets a new "face"? ;-)
However, history doesn't indicate that this is a sure thing. The Nikon D3X came out before the Sony A900, and yet the Sony's images were inferior. I'd guess that Sony was given parameters or standards for fabrication by Nikon themselves, so even though Sony was the one physically making the sensors, they simply couldn't match Nikon's own final performance when ADC and raw processing were all said and done.
Again, I'm hoping for the best here. Regardless of whatever "version" sensor Pentax gets; there's a lot that can be done between when the photons are collected and when the PEF file is written.