No, 4:3 is not a square. I found a discussion on the topic here[*]. The consensus seems to be that “wasted” sensor area outside the circle would not be marketa

No, 4:3 is not a square. I found a discussion on the topic here[*]. The consensus seems to be that “wasted” sensor area outside the circle would not be marketable. https://photo.stackexchange.com/questions/109452/is-there-any-camera-with-a-square-sensor https://photo.stackexchange.com/questions/109452/is-there-an...