Depending on the angle you take verticals I note they do have a tendency to become diagonal, and even use of the Straighten tool doesn't really sort this out. Certainly when viewed through the medium of photography, there are fewer vertical lines than you might think!
Horizontal linesThe Straighten tool is essential here too!
This was an interesting and satisfying exercise in focusing on a particular element almost to abstraction; indeed those that are more or less abstract rather than representational meet the criteria where the line is the first thing the viewer would notice.
This was an interesting and satisfying exercise in focusing on a particular element almost to abstraction; indeed those that are more or less abstract rather than representational meet the criteria where the line is the first thing the viewer would notice. 