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Help > Working with Cameras > Calibrating a Camera > Steps in Camera Calibration > Taking the Calibration Photos > Camera Positioning > Additional Positions
Additional Positions

In addition to the eight positions shown above you may want to add one more roll angle at each position bringing the total to 12 photos. These four additional photographs ensure a better coverage and a complete set of roll angles. While they are not necessary, if you are striving for the highest accuracy you may wish to take them. They are shown below in Position 1 - Roll 90 degrees ccw, Position 2 - Roll 90 degrees ccw, Position 3 - Roll 90 degrees cw, and Position 4 - Roll 90 degrees cw.