| Movement | Usual Direction | Effect | Example |
|---|---|---|---|
| vertical shift ("Parallelverschiebung, "Hochstellung") | up, down towards distant side of object | corrects vertical lines | up: building down: small objects |
| side shift ("Seitwärtsverstellung") | left or right towards distant side of object | corrects horizontal lines | small and large objects |
| tilt ("Kippen","Neigen") | front forward, back backward | extend depth of field ("Scheimpflug"). Rear and front tilt is called double Scheimpflug | landscape view |
| swing ("Drehung") | right or left | diagonal sharpness area | small objects |
Links: perspective in detail (by Alpa)
a different opinion (by Schneider Kreuznach)
why you are loosing up to 45% of pixel with photoshop correction (by Rodenstock)