SIGMA DP3 Quattro - Manual (Page 84)

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COLOR SPACE
It is possible to select sRGB, which is a common color space or Adobe
RGB, which is mainly used for commercial printing, and other industrial
purposes.
Color Space can be set in [ Capture Settings] (P.27) → [Color Space].
sRGB (Default) Adobe RGB
CAUTION !!

Please set the color space to sRGB for regular usage. If you select
Adobe RGB, please be sure to use the Sigma Photo Pro software or
another image processing software supporting DCF 2.0.
AUTO ROTATE
It is possible to record the vertical image information to images.
The Auto Rotate can be set by [ Capture Settings] (P.27) → [Auto
Rotate].
Off The vertical image information will not be recorded.
On (Default) The vertical image information will be recorded.

When vertically orientated images are reviewed, they will automatically
rotate and be displayed vertically.

When vertically orientated images are reviewed in Sigma Photo Pro,
they will automatically rotate and be displayed vertically.

When vertically orientated images are rotated by pressing [ Playback
Menu] → [Rotate], this rotated orientation will be stored.
WARNING !!

If the images are taken while the camera is pointed up or down, the
vertical position information may not be recorded properly.