How to distinguish between HD, SD and analog cameras?

1. Generally, HD cameras are marked with "HDV", but HD cameras are divided into pure HD1080i (1920 *1080 pixels) and quasi-HD 720p( 1280*720 pixels).

2. Generally, SD cameras only indicate the serial logos of various brands, such as Panasonic DVCPRO and Sony DVCAM. And their frame types can also be queried through these flags. The frame of the SD camera is 720*576 pixels.

3. Analog cameras are generally marked with "VHS", and Sony also has "Hi8". Its image quality standard is the number of lines, the highest is 5 10 lines and the lowest is 250 lines.