The persistent dream of a return to square format cameras (which the camera industry was solidly moving away from already in the film era) fascinates me. Let me try to comment on a few of the incorrect outright nonsensical claims:
- There are several sensor maker who could do a custom 56x56mm CMOS sensor for Hasselblad: for example, Teledyne-Dalsa and Canon both offer custom CMOS sensor sizes up to "wafer scale". The barrier is cost relative to expected market interest, not an imagined uncooperative Sony monopoly.
- The claim that a square Hasselblad would offer a distinction from phone-camera is ironical coming from the person who argued for a strong modern interest in square by citing its use on Instagram! The kids are OK with cropping.
- The idea that Hasselblad's current weakness is due to not staying with the square is strange considering that (a) Hasselblad's traditional main rival Rollei stayed with the square, and faired far worse, whereas (b) the rival that is outperforming "H" is the evolution of Mamiya's 645 system.
- A collection of old manual focus "V" lens designs would be a very poor basis for a new system, and "H" lenses can not be trusted to cover true "6x6" (56x56mm), especially when the higher resolution demands of todays DMF meet the likely poor corner performance outside the image circle for which those "645" lenses are designed. Or is the proposal a "crop square MF"? About 50x50mm would fit the 70mm diagonal of 645.
- AFAIK, Hasselblad's "square mirrorless" mock-up was likely nothing more than a 3D-printed illustration (or a clay or balsa-wood carving, if the design shop went old-school.) Is there any evidence that, as Bo_Dez says, "The prototype was actually quite elaborate."?