SIGMA DP2 - Manual (Page 71)

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AUTO ROTATE
It is possible to record the vertical image information to images.
The Auto Rotate can be set by [ Capture Settings] (P.26) → [Auto
Rotate].
Off The vertical image information will not be recorded.
On* The vertical image information will be recorded.
The default setting is [On].
● 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.