Very interesting, but recently you had said that if Canon relies on dual ISO, that's only a bandaid, and might not yield enough of a DR increase, at least with the combined benefit of a lower noise floor. Obviously you meant more akin to what ML did, rather than starting from quasi-scratch, as this link hints at.
Using the existing downstream amplifier on half the pixels, which is what ML is doing, is a bandaid (and not ideal, as it costs you in resolution). What Canon has patented here is MUCH better...the way I would expect it to be done. Since they are reading the sensor with two different gain levels, I really don't see why there would be any reasonable limits on DR for the foreseeable future...ML is only limited to 14 stops because the ADC is 14-bit. Technically, the potential for very scalable DR is there in Canon's patent (assuming I've understood it correctly, that is.)
It seems to me there will be a lot of lossless compression necessary for the large RAW files (and a lot of processing power). Also though, does this not make it likely, that the 2014 1-series camera, assuming it's in the 40MP range, may not use the above process? If so, it might just "only" have 14 bit RAW capability. I too was hoping it was actually going to be 16 bit, whether it actually got much over 14 stops of "real" DR or not. That would really be something, if Canon just suddenly introduced a camera that could actually do 16 stops.
Are you planning on buying the new camera, early on?
Agreed, normally a RAW file will have lossless compression. Still, a gigabit of information is a lot...you can't compress the read stream, really...you have to process it all in order to compress the output file. So, while from a storage space standpoint it wouldn't be all that bad, from an image processing standpoint...you would need much faster processors.
Canon, or someone, mentioned around a year ago, maybe not quite that long, that Canon might push a bit depth increase with the Big MP camera. Who knows if that is the case, it was a CR1, but still, interesting nevertheless. I can't imagine anyone pushing bit depth until there is a definitive reason to do so. For all of DXO's claims about the Nikon D800 and D600 offering more than 14 stops of DR, they are talking about downscaled output images. The native DR of the hardware itself is still less than 14 stops...13.2 for the D800 IIRC.
That's with 3e- of read noise...which is INSANELY LOW (usually, you don't see that kind of read noise until you start peltier cooling sensors to sub-freezing temperatures). There are a few new ideas floating about regarding how to reduce read noise. There have been a number of patents and other things floating around lately about "black silicon", a structural modification of silicon that gives it an extremely low reflectivity index, which supports a natural read noise level of around 2e- and some of the best low light sensitivity known, and it is being researched for use in extreme low light security cameras that can see by starlight (which blows my mind.) Theoretically, this can greatly improve DR at what would be high ISO settings.
Canon's approach with dual scaling is potentially another way to get a lot more average dynamic range at low or high ISO out of a single read by using two separate signals with different gain and sampling (I guess) to effectively do a low ISO and high ISO read at the same time for each pixel, and blend the results together using on-die CP-ADC.
As for new cameras...all that is on hold until I can get my business started and start making some money again. I don't have any plans to purchase anything at the moment, outside of possibly a 5D III if the price is right. I certainly won't be buying a 1D MPM (megapixel monster) any time soon if it hits with a price over $5k. Besides, I like to wait and see how things settle first...I am still interested in the 7D II, and want to wait for both cameras to hit the street and demonstrate their real-world performance before I make a decision.