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Appendix >
Glossary
sRGB (Standard RGB)
International standard of colour space established by the IEC
(International Electrotechnical Commission). This is defined from colour
space for PC monitors and is also used as the standard colour space
for Exif.
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.
RAW (CCD raw data)
The original, unprocessed data, collected directly from the camera’s
image sensor. White Balance, contrast, saturation, sharpness, and
other data can be manipulated with editing software before the image is
compressed into a standard file format.
Resolution
The number of pixels present in a digital image. High resolution images
contain more pixels and typically show more detail than low resolution
images.
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 passes 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.
