It uses one of the smaller MF sensor formats so after applying the crop factor, you're looking at around 70mm f2.5 and 35mm f2.8 FF equiv for the 90mm f3.2 and 45mm f3.5 lenses respectively in terms of FOV and DOF.
I don't think shallowest DOF or lowest light capabilities were ever the main focus for this and other MF formats.
But for a wide range of moderate to good light shooting conditions, this will likely offer the best IQ possible in a far more manageable size and price.