Photos can be great resources for further understanding and applying linear perspective. The presentation above gives a step-by-step look at how a photo reveals depth much like that used in linear perspective.
When there is a single vanishing point, all convergence lines appear to recede to a single point. The convergence lines represent parallel planes that look like they get smaller as they get further from the viewer. You'll notice that, besides the diagonal convergence lines, there are mostly only vertical and horizonal lines present.
Photographs of Architecture-are good resources for seeing perspective because most cameras rely on a single lens making the receding lines more predictable. We see stereoscopically (with two eye lenses) so the recession may be harder to predict.
- Try using a photographic print of a four-walled rectangular building and draw the horizon line, vanishing point, and convergences on the copy.