Lens construction: 11 elements in 7 groups (2 ED glass elements and 3 aspherical lenses)

Picture angle: 99° - 61°

Focal-length scale: 12, 15, 18, 20, 24mm

Number of diaphragm blades: 7 (rounded)

Minimum f/stop: 22

Closest focusing distance: 0.3m (through the entire focal range)

Maximum reproduction ratio: 1/8.3

Zoom control: Manual, via separate zoom ring

Macro focusing: N/A

Focus-limit switch: N/A

M/A mode: Available

Focus lock button: N/A

Weight (approx.): 465g

Dimensions (approx.) (from the camera’s lens mounting flange): 82.5×90 mm

Lens cap: Snap-on

Lens hood: HB-23 (supplied)

Lens case: CL-S2 (optional)

Tripod collar: N/A

External front filter attachment frame: Does not rotate

External front filter: 77mm

Slip-on filter: N/A

Built-in/rear filter: N/A

Circular polarizing filter: Usable

Circular polarizing filter II: Usable, even with dedicated Lens Hood HB-23

Infrared compensation scale: N/A

Supplied accessories: 77mm snap-on front lens cap LC-77, Rear lens cap LF-1, Bayonet Hood HB-23

Aperture ring: N/A

Distance scale: Does have

Material of lens mount: Metal