Good point. The images could be taken vertically with generous overlap.
You could stitch images easily in Photoshop [or some lesser programs], but that leads to an inconsistent vanishing point, destroying any possibility of accurate model position when placed in the scene.
OR: place the rendered image later in Photoshop, distorting it as needed to suit the faked-up context.
This guy's solution costs $129. Why would he repeatedly persist in using expensive professional labor to compensate for a sub standard camera?
Dwight Atkinson