My most interesting and probably the best lens

Not only in terms of sharpness, but also the backlight behavior is outstanding (low dispersion), good contrasts, little CA's and of course incredibly versatile. Ideal for architectural photography and also extended landscapes.
Advantage over round shots where the camera and lens are rotated through the nodal point is, that even objects to be moved directly in front of the lens distorted in any way or.
Possible about the tilt function also interesting Fokusierungsformen.