A unique feature of Architectural photography is that buildings and similar structures should be captured in a way that are both aesthetically pleasing and be accurate representations of their subjects.
In this respect, most architectural photographers employ large format cameras, which has both the advantage of superb resolution and image quality, and also the essential ability to raise or lower the front standard to keep the verticals straight and parallel.
For DSLR cameras, one essential piece of equipment is the Tilt-and-Shift lens, which has the ability to shift the viewpoint in order to capture the verticals as they should be.
Our instructor Larry Haydn uses such a lens to capture the architecture of a fastfood restaurant. The image was a blend of three shots in RAW format.