Tilt 'n' shift lenses for architecture or post processing to get straight lines? Neither is for me. In my humble opinion it steals all the dynamics from architectural photos. Instead I seek to get what is often avoided by photographers. For it to work I have to get close to the buldings and that gives sometimes the most interesting views. This turns the disadvantage of having no tilt 'n' shift into an advantage because I have lots of diagonals and lines and a very prominent vanishing point.