long story short
nice that you have seen what I have tried to explain about read noise and banding since I started as a member here
Not really. My problem with you in the past has been that you have tried to make it sound as though Canon cameras are incapable of taking good photographs, period. My scene had EIGHTEEN STOPS of DR (at least). The D800 will fare better than the 5D III, but even the mighty Exmor will still fall short by four stops in that situation. You'll still have noise...the benefit of Exmor is that it won't be banded noise. As I've always stated in the past...that IS an EXTREME situation, and purposely puts Canon in the worst possible light (no pun intended). You've always made it sound as though Canon sucks donkey danglers, is incapable of producing a good camera, hell you (and Mikael and TheSuede) have even claimed they are incapable of innovating new technology and are literally incapable of producing a better sensor. I dispute those notions. Exmor is an advancement, no doubt about it. It doesn't instantly invalidate every previous sensor design and suddenly make them take crappy photos 100% of the time.
If you had provided a balanced
argument in the past, I wouldn't have argued with you. But just like Trumpet, you have provided skewed arguments, straw men, etc., or refuse to accept the facts or prove your case with physical evidence. In the case of Mikael, I believe he frequently posted examples that were unequally weighted against Canon (a 1D X example comes to mind that appeared more underexposed than a D800 shot), and when I demanded actual RAW files, he refused to produce them. That made me even more suspicious, and gave me all the more reason to push harder for the truth. I'll debate the points with anyone who doesn't present a balanced argument or tries to obfuscate the facts. Yes, Canon has some nasty read noise. Read my posts here on CR, you'll see I've never denied that (although I will admit I had very high hopes for the 5D III at its release, and wasn't willing to accept the fact that its DR hadn't changed a bit in a generation until the evidence was too much to deny). However it DOES take an extreme scene with lots of DR to make that actually present as a problem...it does not occur in every single shot, which has been indicated in the past...particularly by Mikael.
There is a balanced argument here, somewhere. I just wish people would make it.
DR is good. There is nothing wrong with having more. More DR is always usable. In certain types of photography, having as much DR as you can get your hands on is critical. Shadow recovery with two extra stops of DR can be amazing, and in the case of Exmor is banding free.
Conversely DR is not the end-all, be-all for every kind of photography. Additional DR, in the case of 14-bit ADC, can only be had at the lowest ISO settings. At higher ISO SNR is the far more relevant factor, and currently Canon stands as the king of high ISO. Sensor IQ is also not the final factor in IQ, AF systems, frame rate, lens quality, etc. are just as important, and for many types of photography, more important than the sensor.
There are pros and cons to everything. Trumpet is arguing there is no value whatsoever to having more DR (probably because of the application of the Zone system, which I believe is invalidated by modern technology, and is skewing his understanding). Ankorwatt and Mikael (assuming they are actually different people) have argued that DR is the only thing that matters and everything else is moot if you don't have more DR.
Neither of those are true, and it really depends on the kind of photography whether more DR matters or not. For most of what I do, I use ISO 100 so rarely that it doesn't matter a wit. I am rarely below ISO 800. Right now, the best cameras I could get my hands on are the 5D III and 1D X, as both offer the cleanest high ISO I've ever seen (particularly the 1D X...I've seen ISO 51200 shots that floor me.) In the case of Art_d's work, it's clear that more DR can be a very valuable thing in a pinch. For pretty much every landscape photographer on earth, more DR will still not be enough, and I am sure people will still be using GND filters when we finally have cameras with 16 stops of DR.