Originally posted by Cambo
I don't get the confusion...
Cameron
How could the sensors overlap? Look at a picture of a "naked" sensor. There are tiny wires extending out of all four sides of the sensor. You need to make room for those. Even if you somehow had the wires come out of the back of the sensor, they would have to align absolutely perfectly (and I mean absolutely, probably 1 in 10,000 accuracy) or the image would LOOK like four poorly stitched images.
In addition, the four sensors would need to be perfectly aligned in the image plane. Any variation would cause a difference in focus from one sensor to the next.
These things MIGHT be possible (personally, I doubt it), but I think it would be more expensive than a single large sensor, which would be VERY expensive.