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Image change rate

There are several standard image-change rates (or frame rates) used today: 24 Hz, 25 Hz, 30 Hz, 50 Hz, and 60 Hz. Technical details related to the backwards-compatible addition of color to the NTSC signal caused other variants to appear: 24/1.001 Hz, 30/1.001 Hz, and 60/1.001 Hz.
The image change rate fundamentally affects how "fluid" the motion it captures will look on the screen. Moving image material, based on this, is sometimes roughly divided into 2 groups: the so called film-based material, where the image of the scene is captured by camera 24 times a second (24 Hz), and the video-based material, where the image is captured 50 or ~60 times a second.