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Leica APO-Summicron-SL 50 f/2 ASPH. — APO-Summicron-SL 50 f/2 ASPH.
APO-Summicron-SL 50 f/2 ASPH.© Leica Camera AG
LeicaAPO-Summicron-SL

Leica APO-Summicron-SL 50 f/2 ASPH.

L · PRIME
50mm
APERTURE
1:2
AFWR

Launch MSRP

$4,495
Weight
740g
Filter
⌀67mm
Min focus
0.35m
Max mag.
0.20×
Formula
12E / 10G
Released
2019
AlternativesCompare with…
01

Specification sheet

Optical construction

12
Elements
10
Groups
0 LD · 3 ASPH
Blade count not published
  • 3x Aspherical (4 aspherical surfaces)
  • Anomalous partial dispersion glass
  • Aqua-Dura coating
Aperture range
f/2 — f/22

Physical & ergonomics

APO-SUMMICRON-
Weight
740g
⌀ × length
73.0 × 102.0mm
Filter
⌀67mm
Weather sealed
Yes
Aperture ring
No

Autofocus actuator

Stepping motors (Dual Syncro Drive)
Autofocus
Stabilisation
Body IBIS
Teleconverter
Not supported
AF speed score
8.6 / 10

Close-up performance

Min focus distance
0.35m
Max magnification
0.20× (1:5.0)
0.20×
0×0.25×0.5× half macro1.0× macro
02

Optical character

The APO-Summicron-SL 50 f/2 ASPH. is the reference standard lens of Leica's SL system, released in August 2019 as part of the APO-Summicron-SL family that shares one form factor. Leica's claim is apochromatic correction at full aperture: the 12-element, 10-group design uses three aspherical elements and several anomalous partial dispersion elements so that f/2 is a working aperture rather than one to stop down from.

It focuses to 0.35m (1:5) with stepping motors in Leica's Dual Syncro Drive, which Leica says can travel the full focus range in about 250 milliseconds. The metal barrel is sealed against dust and spray and the outer elements have Aqua-Dura coating. At 740g and 102mm it is heavy for a 50mm f/2, though much lighter than the 1,065g Summilux-SL 50.

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

  • +Apochromatic design with very low colour fringing
  • +Close focus to 0.35m (1:5)
  • +Fast stepping-motor AF (about 250ms full travel, per Leica)
  • +Sealed metal barrel, Aqua-Dura coating
  • +Same form factor as the other APO-Summicron-SL primes

Weaknesses

  • −740g and 102mm long, heavy for a 50mm f/2
  • −$4,495 US launch price
  • −No aperture ring; aperture is set on the camera

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 length50mm
CategoryStandard
Maximum aperturef/2
Minimum aperturef/22
Construction12 elements in 10 groups
Special elements3x Aspherical (4 aspherical surfaces) · Anomalous partial dispersion glass · Aqua-Dura coating
Aperture bladesNot published
Focus
Focus typeAutofocus
DriveStepping motors (Dual Syncro Drive)
Minimum focus0.35m
Max magnification0.20×
StabilisationNone (uses body IBIS)
TeleconvertersNot supported
Body
Weight740g
Diameter × length73.0 × 102.0mm
Filter thread⌀67mm
Weather sealingYes
Aperture ringNo
De-clickable apertureNo
Release year2019
Launch MSRP$4,495 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› sites/default/files/pm-15327-11185_Datenblatt_APO-Summicron-
  • leica-camera.com› en-US/photography/lenses/sl/apo-summicron-sl-50mm-f2-asph-bl
  • leicacamerausa.com› leica-apo-summicron-sl-50mm-f-2-asph.html
  • cameraspecs.co.uk› lenses/panasonic/leica-apo-summicron-sl-50mm-f2-asph-652.htm

Launch price

  • photographyblog.com› news/leica_apo_summicron_sl_50_mm_f_2_asph

Professional reviews

  • macfilos.com› 2019/08/15/review-leica-apo-summicron-sl-50mm-f2-asph/
06

Similar focal length alternatives

  • VSAPO-Summicron-SL 50 f/2 ASPH. vs 50mm F1.05 (L-Mount)
  • VSAPO-Summicron-SL 50 f/2 ASPH. vs AF 50mm F1.8 (L-Mount)
  • VSAPO-Summicron-SL 50 f/2 ASPH. vs Summicron-SL 50 f/2 ASPH.
  • 7Artisans

    50mm F1.05 (L-Mount)

    7Artisans 50mm F1.05 (L-Mount)
    50mmF1.05
    WT
    606g
    FLT
    ⌀58mm
    MFD
    0.57m
    MSRP
    —
    MFRING·DC
  • 7Artisans

    AF 50mm F1.8 (L-Mount)

    7Artisans AF 50mm F1.8 (L-Mount)
    50mmF1.8
    WT
    421g
    FLT
    ⌀62mm
    MFD
    0.50m
    MSRP
    $228
    AFRING·DC
  • LeicaSummicron-SL

    Summicron-SL 50 f/2 ASPH.

    Leica Summicron-SL 50 f/2 ASPH.
    50mmF2
    WT
    402g
    FLT
    ⌀67mm
    MFD
    0.45m
    MSRP
    $1,895
    AFWR