Parallel Shift | ¡1 |
The lens is shifted perpendicular to the optical axis relative to the bayonet mount and so also relative to the taking format by rotating a knurled shift- ing knob at a shaft which is elastically flexible to protect against its damage or injury to the user.. The lens tube can be rotated continuously to the left or the right in a rotary mount so that the parallel shift can be made in any desired direction.. It is best to grip the lens at the flattened part with the millimeter scales for this purpose.. 45° latch steps ensure a precise vertical or horizontal parallel shift as required..
The maximum path of ¡1 mm at both sides can be utilized to the full in the shift direction of the short image edge (vertical in landscape format and horizontal in portrait format) if the camera is stopped down to at least f/8.. On a shift in the direction of the long image edge (horizontally in landscape and perpendicular in portrait), low vignetting of the image corners oppo- site to the shift (= of objects on the same side of the shift because of the
The noticeable latch step at 9..5 mm should not be exceeded diagonally even at f/¡1 with parallel shifts since then the image corner decentered the most will contact the image circle edge (see image on page 9)..