Leica Super Elmar-M 21mm f/3.4 ASPH

Focal length

21mm

Maximum aperture

F3.4

Minimum aperture

F16

Aperture settings

Click-stops with half-stop detents

Angle of view (diagonal,
horizontal, vertical)

• For 35mm format (24 x 36mm): 91°, 80°, 59°
• For Leica M8 models (18 x 27mm): 74°, 64°, 46° (approx 28mm equiv)

Optical design

• 8 elements / 7 groups
• 2 aspherical surfaces
• Position of entrance pupil: 15.6 mm (to the apex of the first lens surface)

Minimum focus

0.7m (2.3 ft)

Maximum magnification

0.03x

Distance scales:

Combined metre/feet graduation

Filter thread

46mm, non-rotating

Dimensions

• 43mm length x 53mm diameter (1.7" x 2.1")
• 55mm length including hood (2.2")

Weight

279g (9.8 oz)

Lens hood

• bayonet-type, supplied

Mount

• Leica M quick-change bayonet with 6-bit bar-coding

Supplied accessories

• Metal lens hood
• Front cap for lens hood
• Rear cap
• Leather case
• Instruction manual