The 120MXS is an ultra-high resolution CMOS sensor that offers 13280 x 9184 effective pixels, which equates to about 60 times the resolution of Full HD.
Canon’s 120-megapixel sensor will measure about 29.22mm x 20.20mm, a size equivalent to APS-H, Canon says. And it will offer a square pixel arrangement of 2.2µm x 2.2µm with 122 million effective pixels. Canon adds:
Ultra-high-resolution is made possible by parallel signal processing, which reads signals at high speed from multiple pixels. All pixel progressive reading of 9.4fps is made possible by 28 digital signal output channels. It is available in RGB or with twice the sensitivity, in monochrome.
As you can see in the video below, the detail from this 120-megapixel sensor compared to Full HD is quite staggering.