Method and apparatus for converting images at a given frame or field rate to second and third frame or field rates while maintaining system synchronism

An imaging device which outputs a picture image signal at a field frame rate and another picture image signal at a second field rate which is different from the first field rate, comprising:

• a photographic section which photoelectrically converts an image of a subject, and which outputs a picture image signal which consists of fields at a first field rate;
• a first frame rate conversion section which converts the picture image signal at the first field rate which is outputted by the photographic section into a picture image signal at a second frame rate which is smaller than that of the first field rate;
• and
• a second frame rate conversion section which converts the picture image signal at the first field rate into a picture image signal at a third frame rate which is smaller than that of the first field rate, and which is different from that of the second frame rate, wherein
• the first field rate is the least common multiple of the second frame rate and the third frame rate.