Just to be clear (as things sometimes get skewed on here) I’m not suggesting older models were bad cameras, just that the newer processes Canon implimented 2 years ago or so have made improvements. I’ve never had a shot on any camera (and Ive had a LOT and they were all canon) be noisy to the point of distraction or unusable unless either I totally F’ed the shot or the light was so so so poor that no FF camera could have salvaged it.Recently I got myself a 5D classic to use with Zeiss primes lenses. I have used it quite a lot, and still I haven’t had issues with either noise or lack of dynamic range. Ok, I have avoided putting it in very difficult lighting conditions, BUT, I haven’t had any issue taking the pictures I wanted to make, or from taking a photo worth taking. For most use, I think DR is the most overrated quality in a digital camera. The camera world has been stupified and lost perspective due to the hype around DR.
The highest number of shots I hit each year when ranked by ISO are easily 3200-6400 because of shooting live indoor dance performances with difficult lighting, no ability to strobe (cuz it’s live), and having to set minimum shutter speeds at 400-500 or so.
Both the 1DX and 1DX2 have provided very pleasing results in that dept