Saturday, 8 February 2020

Key Terms in Simple Form


Frame Rate - the number of images per second. Film is generally 24fps. TV is generally 30 or 60fps.

Exposure - the amount of light that comes through the lens.

Aperture - the hold in the center of the lens that light travels through.

F/stop - measure of how big or little the aperture is.
They are fractions. F/2 means the the aperture is 1/2 as big as across as the lens is long.
F/16 means the aperture is 1/16 as as big across as the lens is long. 
Less light comes in at F/16. 

Color temperature - identifies different colors of light sources.  Hotter outdoor light is blue.  Indoor light is warmer. You can "white balance" to perfect your color. It ensures your whites represent as white.

ISO - indicates the sensitivity of the film. The lower the number, the less sensitive and the more light             you need to get a usable picture. Each time you double the ISO number, you halve the amount of light needed to get a usable image.  Low ISO generally produces a higher quality picture. Higher ISO generally produces grainier images. 



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