Polaroid 20x24 (3:54).

;-)

Hassleblad makes some outrageous things, too, of course. E.g. one of their 50 MP cameras can stack 6 shots to give a 200 MP image. Nikon microscopes have done similar magic for years - get higher resolution images than the sensor would normally permit.

But those are babies compared to things like 3.2 GP astronomical CCDs.

Camera technology marches on...

Cheers,
Scott.
(Yeah, I know that FF cameras aren't going to be cheap anytime soon. :-(