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Leica Super-APO-Summicron-SL 21mm F2 ASPH

Leica L-Mount Autofocus

Leica Super-APO-Summicron-SL 21mm F2 ASPH

Focal length
21 mm
Aperture
f/2
Weight
789 g
Filter diameter
67 mm
Min. focus distance
21 cm
Length
102 mm
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At a Glance

This 21 mm wide-angle prime for L-Mount on full frame offers autofocus and a maximum aperture of f/2. Its diaphragm is controlled electronically. The minimum focus distance of 21 cm and a magnification of 0.19x allow close approaches for a wide-angle lens. Landscapes, reportage and night sky photography suit it.

Good for

  • Landscape
  • Reportage
  • Night sky

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

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Min. focal length
21 mm
Max. focal length
21 mm
Max. aperture (min. zoom)
f/2
Max. aperture (max. zoom)
f/2
Min. aperture
f/22
Elements
14
Groups
11
Weight
789 g (1.74 lb)
Filter diameter
67 mm
Min. focus distance
21 cm (8.27 in)
Max. magnification
1:5.3 (0.19×)
Length
102 mm (4.02 in)
Diameter
73 mm (2.87 in)
Released
October 2023

Manufacturer data: leica-camera.com

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Leica Super-APO-Summicron-SL 21mm F2 ASPH fit?

The Leica Super-APO-Summicron-SL 21mm F2 ASPH is a full-frame lens for L-Mount cameras. On full-frame bodies it uses the whole sensor; on APS-C L-Mount cameras its field of view equals 32 mm in full-frame terms.

L-Mount cameras

Full frame:
Leica SL3-P,Leica SL3-S,Sigma BF,Panasonic Lumix S1II,Panasonic Lumix S1IIE,Panasonic Lumix S1RII,Leica SL3,Panasonic Lumix S9,Blackmagic PYXIS 6K,Panasonic Lumix S5II,Panasonic Lumix S5IIX,Blackmagic Cinema Camera 6K,Panasonic Lumix BS1H,Leica SL2-S,Panasonic Lumix S5,Sigma fp L,Leica SL2,Panasonic Lumix S1,Panasonic Lumix S1R,Panasonic Lumix S1H,Sigma fp,Leica SL (Typ 601)
APS-C:
Leica CL,Leica TL2,Leica TL,Leica T (Typ 701)

Leica Super-APO-Summicron-SL 21mm F2 ASPH compared

Key specs side by side with the most similar L-Mount lenses.

LensLeica Super-APO-Summicron-SL 21mm F2 ASPHSigma 20mm F2.0 DG DN | CPanasonic Lumix S 20mm F2.5Viltrox AF 20mm F2.8
Focal length21 mm20 mm20 mm20 mm
Max. aperturef/2f/2f/2.5f/2.8
Weight789 g370 g142 g159 g
Filter diameter67 mm62 mm62 mm52 mm
Min. focus distance21 cm22 cm18 cm19 cm
Length102 mm72.4 mm40.9 mm52.3 mm
Autofocusyesyesyesyes
Image stabilizationnononono
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Leica Super-APO-Summicron-SL 21mm F2 ASPH: FAQ

Does the Leica Super-APO-Summicron-SL 21mm F2 ASPH have autofocus?

Yes, the Leica Super-APO-Summicron-SL 21mm F2 ASPH has autofocus.

Does the Leica Super-APO-Summicron-SL 21mm F2 ASPH have image stabilization?

No, the Leica Super-APO-Summicron-SL 21mm F2 ASPH has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Leica Super-APO-Summicron-SL 21mm F2 ASPH weigh?

The Leica Super-APO-Summicron-SL 21mm F2 ASPH weighs 789 g. It is 102 mm long with a diameter of 73 mm.

What filter size does the Leica Super-APO-Summicron-SL 21mm F2 ASPH use?

The Leica Super-APO-Summicron-SL 21mm F2 ASPH takes 67 mm screw-in filters.

How close can the Leica Super-APO-Summicron-SL 21mm F2 ASPH focus?

The minimum focus distance of the Leica Super-APO-Summicron-SL 21mm F2 ASPH is 21 cm, measured from the sensor plane.

Is the Leica Super-APO-Summicron-SL 21mm F2 ASPH a full-frame lens?

Yes, the Leica Super-APO-Summicron-SL 21mm F2 ASPH covers full frame. On APS-C cameras its field of view equals 32 mm in full-frame terms.

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