WHAT IS THE DIFFERENCE BETWEEN “INTERLACED” AND “NON-INTERLACED”?
PAL or NTSC video cameras work in interlaced mode. In this mode 50 or 60 fields (=half-pictures) are picked-up per second. The first field (=half-picture) consists of all odd horizontal lines (1,3,5, …) and the second one of all even horizontal lines (2,4,6, …). This system has the disadvantage that one complete picture is always a combination of two half-pictures, picked up one after the other and not at the same time. This can result in “unsharp” looking pictures of moving objects. Progressive scan cameras always pick up the whole image completely. This is called non-interlaced mode.
