The tilt-shift function on the 24mm f/ 3.5 lens allows adjustment of the focal plane by an angle of +/- 8.5 ' and enables parallel shift of the optical axis by +/-12mm. Both tilt and shift can be engaged singly and in combination. The tilt-shift rotation mechanism locks at right angle and at parallel and clicks at 45' and the lens mount itself can rotate left or right by 90' with click-stop adjustment each 30'.