Andy Andrews wrote:
The distinction between the "signatures" of various digital sensors will blur even more, now that Sony makes the vast majority of CMOS sensor systems. Its acquisition of Toshiba's CMOS production facilities in 2015, puts it in a position to monopolize the market. Its nearest competitor, Techno System Resources, held but 16% of the business before Sony's buy-out. Whether this is a good thing for the advance of digital capture remains to be seen.
It appears that the fab facilities for sensor devices is following the model of the digital device fab business. The extremely high cost of state of the art facilities has led to consolidation of the large players to a small number of high volume foundry facilities. Sony and Samsung are emerging as the leaders in the sensor market. However, I don't know what we can conclude about the design of the devices. The Nikon D7000 and a Sony camera were reported that have identical sensor chips. Photos of the chips were published to support that claim. Supposedly that was a collaborative effort with some sort of non compete agreement. I would not conclude that the sensor itself is responsible for differences in image quality. The PP either in the camera or in your computer is likely to account for the differences. And that software is proprietary and tightly held.