Digital cameras used for architecture often display vertical lines as non-parallel. The closer the photographer has to stand, the wider angle a lens used and/or the more the camera is aimed up or down, the more pronounced this perspective distortion will be. In the film days, an adjustable large format film camera was used to correct this distortion. Lenses that can correct this distortion are very limited on digital cameras. In most cases with a digital camera, this distortion is corrected in Photoshop.