The "PC" in the name of this shift lens stands for perspective correction. It is especially suited for architectural photography, because it can straighten out those annoying converging lines. The large usable image circle diameter of 62mm makes it possible to shift the complete optical system by 11mm away from the optical axis.
This lens works on all Leica R models(preferably in aperture priority and manual modes) and the Leicaflex SL/SL2.
High-performance 28mm perspective control lens