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sRGB (standard RGB)
International standard of color space established by the IEC (International Electrotechnical Commission). This is defined from color space for computer monitors and is also used as the standard color space for Exif.
Vignetting
The picture edges are blackened when part of the light coming from the subject is blocked by the hood or filter ring, or when the flash is partially blocked by the lens.
White Balance
While shooting, color temperature is adjusted to match the light source so that the subject appears to have correct color.
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Appendix