In article 2, Joe
Makowiec wrote:

I doubt that the sensor is 6x6cm or larger, and the 102mp resolution
is well below that of MF film.

Image sensor 43.8mm×32.9mm Bayer array with primary color filter
Number of recorded pixels 4:3 11648×8736 [max listed pixel dimensions]

it's the same sensor size as the pentax 645d, one of the first medium
format digital cameras.

https://www.dpreview.com/products/pe.../specification
s
Medium format (44 x 33 mm)