When does diffraction kick in on a 50mp 35mm sensor?! How would this be good for landscapes or studio shots where you stop down? Wouldn't scaling up a lower mp shot probably look the same?
There is exactly the same amount of diffraction in a print of a given size from a 12 MP camera and a 50 MP camera with the same size sensor. Higher photo site density does not create any diffraction problem whatsoever. Diffraction is an optical phenomenon, not a sensor phenomenon. The news is entirely good news.
At the same smaller apertures you might shoot on your current camera, you will get equal resolution from the higher MP body to the extent that it affected by things related to diffraction. At some larger apertures, depending on what lens you use, you might get a bit better resolution on the higher MP body.
In addition, there is that potential for smoother gradients, smaller "grain" and pixelation, etc.
There are many who do not understand what is diffraction is and that more sensor resolution is never a bad thing.
If Canon would increased the resolution it will also lead to better dynamic range.
Increased resolution causes increased DR?