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Figure 3.

Lower hemisphere stereographic projection (stereonet) of the camera vectors for both the Photo and Video models, after model building (Plot 1), and after horizontalization of the ρ-vector great-circle envelope (Plot 2). In essence, after this rotation, the vertical axis is paralleled to the true vertical, but the azimuth is yet randomly oriented. (Plot 3) Stereonet of the camera vectors after rotation around the vertical axis. (Plot 4) Rose diagram showing the distribution of the ρ vectors in both models. CH—compass holder.

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