Pentax K-7 Operating Manual page 67

When the Camera is not Level
This camera is equipped with an electronic level for detecting whether
the camera is level. When the camera is not level, this is indicated on
the bar graph in the viewfinder and on the LCD panel. This is useful
when holding the camera.
When level (at 0°)
When tilted 5° to the left
When held vertically and tilted 3° to the right
[Electronic Level] is P (Off) by default. Set in the [A Rec. Mode 3]
menu. (p.266)
The composition can also be adjusted in the camera when the
camera is stabilized using a tripod. (p.203)
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