nothing! the size of the sensor and how it is confiqured is what is at issue, not the shape.they would all have to have the same diamter of circle. The lens forms a circular image that is masked off to the sensor size anyway. In most situations, the viewfinder masks your true area seen by film or sensor even further.
One of the original Kodak's took round pictures, the public I guess wanted rectangles.

If the image circle could be fully recorded with a circular sensor. If the viewfinder allowed a 100% view of the image. If the memory recorded all the image then a person could edit the image on a computer to whatever format they fancied. You could format the image on a computer to whatever shape, with whatever part of the full image. WHAT IF?

Quote:
nothing! the size of the sensor and how it is confiqured is what is at issue, not the shape.they would all have to have the same diamter of circle. The lens forms a circular image that is masked off to the sensor size anyway. In most situations, the viewfinder masks your true area seen by film or sensor even further.
One of the original Kodak's took round pictures, the public I guess wanted rectangles.

Guess I'm not understanding, wouldn't this make the picture round?

Jay

The image projected by any lens is round; it is the masking of the viewfinder that makes it square.
To get a graphic of this pribciple, check out any source materail that deals with the angle of view and angle of coverage.