Specifications:

Brand Canon
Focal Length 135mm
Aperture Maximum: f/4
Minimum: f/45
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Angle of View 18°
Tilt/Shift Tilt ± 10°
Shifts ± 12mm
Minimum Focus Distance 1.61′ (49 cm)
Magnification 0.5x
Maximum Reproduction Ratio 1:2
Optical Design 11 Elements in 7 Groups
Diaphragm Blades 9, Rounded
Autofocus No
Filter Thread Front: 82 mm
Dimensions (DxL) Approx. 3.48 x 5.48″ (88.5 x 139.1 mm)
Weight 2.43 lb (1.1 kg)
Package Weight 2 kg
Box Dimensions (LxWxH) 10.2 x 6.0 x 6.0″

Features:

Perspective control, tilt-shift lens affords +/- 12mm of shift and +/- 10° of tilt, and both types of movements can be applied independently, and parallel or perpendicular to one another. Additionally, the tilt and shift functions can be rotated +/- 90° in any direction for applying the movements in distinct directions.

Tilt-locking mechanism and a large tilt knob benefit operation and ensure the lens stays in place while shooting.

Two Ultra-Low Dispersion (UD) elements help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy.

A Subwavelength Coating has been applied to lens elements to minimize surface and internal reflections for a marked reduction in lens flare and ghosting when working in strong lighting conditions.

A minimum focusing distance of 1.6′ along with a maximum magnification of 0.5x benefits working with close-up subjects.

Rounded nine-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field techniques.