Question

The property of the eye which is used in cinematography?
(A) Range of vision
(B) Persistence of vision
(C) Power of accommodation
(D) Colour blindness

Answer 1

Hint: Cinematography is the art of motion-picture photography and filming either electronically employing an image sensor, or chemically employing a light-sensitive material such as film stock. Cinematography comprises lighting framing, composition, camera motion, camera angles and all other on-screen visual elements.

Complete step by step answer:
The human eye and brain can process only ten to twelve separate images per second, retaining an image for up to one-fifteenth of a second. If another following image replaces the current image in this period, it will create the illusion of continuity of motion.
While shooting a movie or making an animation video, multiple images are flashed before our eyes within a second, such that there is a perception that the images are moving and we are watching a continued video. This is generally expressed in frames per second, higher the number of frames per second, more is the number of images flashing in a minute and smoother is the resulting video.

This means that the correct option is (B).

Note: Let us discuss why the other options were not chosen. Range of vision is the least distance for clear vision (that is, to see an object clearly). Power of Accommodation is the ability of the eye lens to adjust its focal length to focus the images on the retina. Colour blindness or colour vision deficiency is the decreased ability to see differences in colours. While options (A) and (C) are related to proper vision, they are not specific to cinematography. And option (D) is a vision defect so not the correct answer.