Yes you're right except that the height of the camera isn't used in the 3D view. It's just displayed in the tooltip of the camera shown in the plan to show the height of the virtual visitor for a given elevation of his eyes, when the user handles the elevation indicator in his back and this height is below 250 cm.
You should know that before I add levels, the 3D view modification dialog box used to show a Visitor height field:
and when this dialog box was split in two dialog boxes, this field was replaced by Eyes elevation (i.e. Z) field in the Virtual visitor modification dialog box:
According to human proportions the height of a human body is equal to 15 / 14 x eyes elevation, but you will easily understand that with a camera elevation able to go from negative to very high values, showing a Visitor height field and forcing users to multiply that value by 14/15 to get eyes elevation was becoming awkward and/or counterproductive.
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Emmanuel Puybaret, Sweet Home 3D creator
