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Appendixes
99
Glossary
Shutter speed
Shutter speed refers to the amount of time it takes to open and close
the shutter, and it is an important factor in the brightness of a photo, as
it controls the amount of light which pass through the aperture before it
reaches the image sensor. A fast shutter speed allows less time to let
light in and the photo becomes darker and more easily freezes subjects
in motion.
Vignetting
A reduction of an image’s brightness or saturation at the periphery
(outer edges) compared to the center of the image. Vignetting can draw
interest to subjects positioned in the center of an image.
White balance (color balance)
An adjustment of the intensities of colors (typically the primary colors
red, green, and blue), in an image. The goal of adjusting the white
balance, or color balance, is to correctly render the colors in an image.