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Leica Summicron-T 23mm f/2 ASPH Lens

The Leica 23mm f/2 ASPH is a 23mm f/2 lens designed for L Mount Alliance mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Leica Summicron-T 23mm f/2 ASPH Lens

Leica Summicron-T 23mm f/2 ASPH Lens

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Lens Overview — Leica 23mm f/2 ASPH

The Leica Summicron-T 23mm f/2 ASPH is a prime wide-angle lens built for APS-C mirrorless camera systems, mounting via the L-Mount standard. With a fixed 23mm focal length and a maximum aperture of f/2, it offers a bright, fast optic well-suited to a wide range of shooting situations where light gathering and subject separation matter. As a prime lens, it encourages deliberate composition and delivers a consistent optical character that zoom lenses typically cannot match at this price and quality tier.

The f/2 maximum aperture provides meaningful control over depth of field, allowing photographers to isolate subjects against softened backgrounds when needed, while still being capable of stopping down for broader depth of field work in well-lit environments. Autofocus is supported alongside manual focus operation, giving shooters flexibility depending on their preferred working style or subject matter. The lens weighs just 153 grams, making it a genuinely compact and lightweight option for everyday carry.

A 46mm filter thread allows for use of standard photographic filters. No image stabilization is present, so shooters should factor this into their technique, particularly in lower light conditions at slower shutter speeds.

Key Features — Leica 23mm f/2 ASPH

23mm f/2 ASPH Prime: Aspherical optical design at f/2 delivers high sharpness and minimizes aberrations across the APS-C frame.

35mm Equivalent Field of View: The 23mm focal length on APS-C translates to approximately 34.5mm equivalent, a versatile field of view suited to street, travel, and documentary shooting.

Leica T-Mount Compatibility: Native Leica T-mount (also known as L-mount for T/TL series) integrates directly with Leica T, TL, and TL2 cameras without adapters.

Auto and Manual Focus: Supports both autofocus and manual focus operation, giving shooters flexibility across different subjects and working styles.

f/2 Maximum Aperture: A bright f/2 opening aids light gathering in low-light conditions and allows meaningful subject separation from the background.

Compact 153g Build: At just 153 grams, the lens is well-suited to everyday carry and lightweight travel setups.

Lens Specifications — Leica 23mm f/2 ASPH

Leica 23mm f/2 ASPH full specifications
SpecDetail
Use CasesStreet, Travel, Portrait
Lens TypePrime
FormatAPS-C
Zoom/PrimePrime
Focal Length23mm
Maximum Aperturef/2
Camera SystemMirrorless
Lens MountL Mount Alliance
AutofocusYes
Focus TypeAuto, Manual
Image StabilizationNone
Filter Thread46mm

Description — Leica 23mm f/2 ASPH

The Leica Summicron-T 23mm f/2 ASPH is a prime wide-angle lens designed for APS-C mirrorless systems using the L-Mount. Its 23mm fixed focal length places it firmly in the wide-angle range, offering a versatile perspective for a variety of photographic genres. The f/2 maximum aperture makes this a fast lens by prime standards, providing photographers with meaningful control over exposure and depth of field across different lighting conditions.

Weighing just 153 grams, it is a compact and travel-friendly option that won't weigh down a mirrorless kit. Both autofocus and manual focus are supported, offering operational flexibility whether you're working fast or deliberately. A 46mm filter thread enables standard filter use, and the lens is built around a mirrorless camera system architecture.

Note that no image stabilization is included, so shooters should plan accordingly when working in challenging light.

Pros — Leica 23mm f/2 ASPH

  • ✓Bright f/2 maximum aperture enables effective shooting in varied lighting conditions
  • ✓Lightweight at just 153g, ideal for travel and everyday use
  • ✓Supports both autofocus and manual focus operation for shooting flexibility

Cons — Leica 23mm f/2 ASPH

  • ✗No image stabilization, which may require more careful technique in low light
  • ✗APS-C format limits compatibility to crop-sensor L-Mount bodies only
  • ✗Fixed 23mm focal length offers no zoom versatility

Reviews — Leica 23mm f/2 ASPH

Videos — Leica 23mm f/2 ASPH

Leica CL Lens Review: Summicron-TL 23mm f/2.0 ASPH: a great all-purpose versatile lens. — S C

Resources & Downloads — Leica 23mm f/2 ASPH

Manuals & Guides

Frequently Asked Questions — Leica 23mm f/2 ASPH

What camera mount does this lens use?+
The Leica Summicron-T 23mm f/2 ASPH uses the L-Mount, making it compatible with L-Mount mirrorless cameras. It is designed specifically for APS-C format bodies within that system.
Does this lens have image stabilization?+
No, this lens does not include image stabilization. Photographers shooting in low light or at slower shutter speeds will need to rely on camera body stabilization if available, or steady shooting technique.
Does the lens support autofocus?+
Yes, the lens supports both autofocus and manual focus operation. This gives photographers the option to switch between modes depending on the shooting situation and personal preference.
What filter size does this lens accept?+
The lens has a 46mm filter thread, allowing use of standard 46mm photographic filters such as polarizers or ND filters.
How heavy is this lens?+
The lens weighs 153 grams, making it a notably lightweight prime option suitable for compact mirrorless setups and extended handheld use.
Is this a zoom or prime lens?+
This is a prime lens with a fixed 23mm focal length in the wide-angle range. There is no zoom capability, but the fixed focal length design is a deliberate choice for optical consistency and maximum aperture performance.

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