canoma was mostly for doing interiors (rooms with rectangular walls) that had rectangular items in them. trying to do a model from photos is probably too difficult to describe correctly, but one will just end up with a dull, flat-looking canoma-type model. to create a complex, multi-faceted model with curved surfaces and lots of "in & out" bits (non-zero 2nd and 3rd derivatives in cross section), one normally uses either a line-laser scanner, or a mechanical device that moves a point along the surfaces of the physical object. there is a post in this forum about using a line-laser and a webcam to do this, but it's not for the faint-of-heart IMVHO.