Canon's best pixel is the tiny 1.84 micron one in the G15.
I would love to have such 24x36mm camera / sensor with this tiny pixels regardless Im out in the nature or in the studio
That would be pretty awesome. A FF with that pitch would clock in at 256mp.
These days, there are even smaller pixels, though. Some of the latest tech is down to 1.1µm, and the next generation is supposed to be 900nm (0.9µm)! A 900nm pixel on FF would allow a gigapixel sensor. Or 1,066,680,000 pixels, to be exact. ;P
Assuming we were still only using 14 bits per pixel when that sensor rolls around, it would mean a whopping 1.9GB file size per image. To maintain a 10fps rate, we would need an image processor with a data throughput rate of 150Gbit. To support a 30 frame buffer, the camera wold need 64GB of memory.
Ironically, these numbers are not unheard of. A basic desktop gaming computer GPU can process at a much higher rate, and tends to have more memory. By the time FF sensors have pixels this small, one should figure a 150Gbit data path and throughput rate, and 64GB of the necessary memory, would be a no brainer.
Processing a 2Gb RAW image in Lightroom 10, however...that might be a whole different matter...