All of them will be shown step by step. The sensor's OF is usually matched with the lens system and can have a dramatic effect on the system cost and performance.
Optical format is simple in principle yet often misunderstood and misreported in practice.
Express the result in inches. For example, even though a 1 in. Vidicon tube was 1 in. In fact, it offered only about 16 mm of useful area. Therefore, a lens manufacturer, making 1 in. optics only needed to provide about 16 mm of useable diameter.