Canon EOS-1D X Manual (en)

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Color space
A color space is the reproducible color range (color gamut 
characteristics). DPP supports the following five kinds of color space.
sRGB :
Standard color space for Windows. Widely used for 
the standard color space of monitors, digital 
cameras, and scanners.
Adobe RGB :
A wider color space than sRGB. Mainly used for 
printing for business purposes.
Apple RGB :
Standard color space for Macintosh. A slightly 
wider color space than sRGB.
ColorMatch RGB : A slightly wider color space than sRGB. Mainly 
used for printing for business purposes.
Wide Gamut RGB : A wider color space than Adobe RGB.
Refer to the color chart below for the color area of each color space.
Color chart of color spaces compatible with DPP
Color range that can be 
seen by the human eye
Gamma 
value
White point 
(color temp.)
sRGB
2.2
6500K(D65)
Adobe RGB
2.2
6500K(D65)
Apple RGB
1.8
6500K(D65)
ColorMatch RGB
1.8
5000K(D50)
Wide Gamut RGB
2.2
5000K(D50)
CMYK simulation profiles
A profile that simulates colors when printing in a CMYK environment 
(printing machine, etc.). With DPP, you can simulate color with four 
types of profile.
Euro Standard :
Profile normally used for book printing in 
Europe, suitable for simulation of standard 
European printing.
JMPA :
Profile normally used for book printing, etc. in 
Japan, suitable for simulation of magazine 
advertising standard color printing.
U.S.Web Coated :
Profile normally used for book printing in 
North America, suitable for simulation of 
North American standard printing.
JapanColor2001 type3 : Profile becoming a standard in the Japanese 
printing industry, suitable for simulation of 
JapanColor standard printing.
Rendering intent
Rendering intents are color conversion methods when printing an image. 
The conversion method of each rendering intent is shown below.
Perceptual :
Before and after conversion, all colors are 
converted to maintain the relationship between 
colors. Even where colors slightly change, you 
can print a natural-looking image which has 
maintained color harmony. However, 
depending on the image, the saturation may 
change overall.
Relative Colorimetric : There will not be much conversion to colors 
which are similar before and after conversion, 
but colors which are not similar are converted 
appropriately. Because there are little changes 
to similar colors which comprise most of an 
image, you can print a natural-looking image in 
which the saturation has not changed greatly. 
However, depending on the image, there are 
cases where the overall tone of an image 
changes somewhat as colors which are not 
similar and highlights change.
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