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Register/L-Mount/Leica/Wide
Leica Super-APO-Summicron-SL 21 f/2 ASPH. — Front view
Front view© Leica Camera AG
LeicaSuper-APO-Summicron

Leica Super-APO-Summicron-SL 21 f/2 ASPH.

L · PRIME
21mm
APERTURE
1:2
AFWR

Launch MSRP

$5,495
Weight
789g
Filter
⌀67mm
Min focus
0.21m
Max mag.
0.19×
Formula
14E / 11G
Released
2023
AlternativesCompare with…
01

Specification sheet

Optical construction

14
Elements
11
Groups
0 LD · 3 ASPH
Blade count not published
  • 3x Aspherical
  • Anomalous partial dispersion glass (most elements)
  • AquaDura Coating
Aperture range
f/2 — f/22

Physical & ergonomics

SUPER-APO-SUMM
Weight
789g
⌀ × length
73.0 × 102.0mm
Filter
⌀67mm
Weather sealed
Yes
Aperture ring
No

Autofocus actuator

Dual Synchro Drive
Autofocus
Stabilisation
Body IBIS
Teleconverter
Not supported
AF speed score
8.5 / 10

Close-up performance

Min focus distance
0.21m
Max magnification
0.19× (1:5.3)
0.19×
0×0.25×0.5× half macro1.0× macro
02

Optical character

Leica calls it the world's first 21mm APO lens for full frame. It joins the APO-Summicron-SL 28, 35, 50, 75 and 90 with the same compact barrel and E67 filter size, giving the SL range an f/2 super-wide prime for landscape, interiors, architecture, reportage and studio work.

The 14 elements in 11 groups include three with aspherical surfaces, and most are made of special glass with anomalous partial dispersion for its apochromatic correction. It focuses down to 0.21m (1:5.3) for strong foreground compositions, uses Leica's Dual Synchro Drive autofocus, and has a dust- and splash-protected metal barrel with AquaDura coating. It weighs 789g without its screw-on hood.

Reviewer consensus

We summarise professional reviews only after reading at least two independent ones. Not enough have been published or verified for this lens yet.

Owner sentiment

Owner feedback will appear once we have verified real-world reports for this lens.

03

Strengths, weaknesses & performance

Strengths

  • +f/2 at 21mm with apochromatic correction
  • +0.21m close focus (1:5.3)
  • +Same E67 filters and barrel size as the APO-Summicron-SL line
  • +Dust and splash sealed, AquaDura coating

Weaknesses

  • −Very expensive
  • −Leica does not publish distortion figures

Six-axis rating

Ratings are published once at least two independent professional reviews have been read.

04

Technical specifications

Optics
MountL-Mount (FF) · full frame
Focal length21mm
CategoryWide
Maximum aperturef/2
Minimum aperturef/22
Construction14 elements in 11 groups
Special elements3x Aspherical · Anomalous partial dispersion glass (most elements) · AquaDura Coating
Aperture bladesNot published
Focus
Focus typeAutofocus
DriveDual Synchro Drive
Minimum focus0.21m
Max magnification0.19×
StabilisationNone (uses body IBIS)
TeleconvertersNot supported
Body
Weight789g
Diameter × length73.0 × 102.0mm
Filter thread⌀67mm
Weather sealingYes
Aperture ringNo
De-clickable apertureNo
Release year2023
Launch MSRP$5,495 USD
05

Sources

Verified 2026-10-25 against the pages below. Specifications come from the maker; summaries only reflect reviews and owner reports we actually read.

Specifications

  • leica-camera.com› en-US/photography/lenses/sl/super-apo-summicron-sl-21-f2-asp
  • leica-camera.com› en-US/photography/lenses/sl/super-apo-summicron-sl-21-f2-asp
  • leica-camera.com› en-int/press/leica-expands-sl-system-two-new-ultra-wide-angl

Launch price

  • reddotforum.com› content/2023/10/leica-super-apo-summicron-sl-21mm-f-2-asph/
06

Similar focal length alternatives

  • VSSuper-APO-Summicron-SL 21 f/2 ASPH. vs 20mm f/4 Zero-D Shift (L-Mount)
  • VSSuper-APO-Summicron-SL 21 f/2 ASPH. vs LUMIX S 20mm F2.5
  • VSSuper-APO-Summicron-SL 21 f/2 ASPH. vs 20mm F1.4 DG DN | Art (L-Mount)
  • LaowaZero-D

    20mm f/4 Zero-D Shift (L-Mount)

    Laowa 20mm f/4 Zero-D Shift (L-Mount)
    20mmF4
    WT
    747g
    FLT
    ⌀82mm
    MFD
    0.25m
    MSRP
    $1,099
    MFRING
  • Panasonic

    LUMIX S 20mm F2.5

    Panasonic LUMIX S 20mm F2.5
    20mmF2.5
    WT
    142g
    FLT
    ⌀62mm
    MFD
    0.18m
    MSRP
    $498
    AFWR
  • SigmaArt

    20mm F1.4 DG DN | Art (L-Mount)

    Sigma 20mm F1.4 DG DN | Art (L-Mount)
    20mmF1.4
    WT
    635g
    FLT
    ⌀82mm
    MFD
    0.23m
    MSRP
    $899
    AFWRRING·DC