How many times is the 600mm lens?

The visual effect of 1 and 600 mm lens is equivalent to 12 times that of telescope.

2. The lens has two fingers in film and television. One is the optical element used by film cameras and projectors to produce images, which consists of multiple lenses. Different lenses have different modeling characteristics, and their application in photographic modeling constitutes an optical expression means; Two refers to a continuous picture taken from power on to power off, or a fragment between two editing points, also called a shot. One finger and two fingers are two completely different concepts. In order to distinguish, one refers to the optical lens and the other refers to the lens picture.