Leica L-Mount

Not to be confused with Canon L lens.

The Leica L-Mount is a bayonet mount developed by Leica Camera AG for interchangeable-lens autofocus digital cameras.

Leica L-Mount

Logo of the L-mount alliance
Type	Bayonet, digital interface
Inner diameter	51.6 mm
Tabs	4
Flange	20 mm
Connectors	10 electrical pins

The L-Mount has an inner diameter of 51.6 mm^[1] and a flange depth of 20.0 mm.^[2] The L-mount exists in two versions, an APS-C version (TL) and a full-frame version (SL). The two versions are mechanically and electronically compatible. TL lenses mounted on full-frame cameras will cause the camera to use a crop mode from the center of the sensor, corresponding to the APS-C coverage of the lens. SL lenses mounted on TL cameras function normally, providing a 1.5x crop field of view, as is typical with APS-C cameras.

In 2018 Leica formed the L-Mount Alliance, licensing Sigma, Panasonic in the same year, to use an upgraded version of the mount for their own products, opening the way for a more extensive system of fully compatible cameras and lenses.^[3]

Ernst Leitz Wetzlar GmbH, the cine lens business of Leica, joined the L-Mount Alliance in 2021,^[4] DJI followed in 2022,^[5] Samyang, Astrodesign,^[6] Blackmagic Design in 2023^[7] and Sirui in 2025.^[8]

T-Mount to L-Mount

It was introduced in April 2014 with the Leica T (Typ 701) camera. At the time of introduction, it was called the "T-mount", but this was changed to "L-mount" with the release of the Leica SL, a full-frame sensor camera using the same mount. The Leica T was renamed to the Leica TL at this time,^[9] to permit marketing clarity for the L-mount lens line: TL lenses would cover APS-C sensors, while SL lenses would cover full-frame sensors.

The mount is used by the Leica TL (discontinued), TL2, Leica CL (2017) and Leica SL systems. The L-Mount is a registered trademark of Leica Camera AG.

Leica T (701), the first L-Mount camera

Kazuto Yamaki (Sigma), Andreas Kaufmann (Leica Camera) and Junichiro Kitagawa (Panasonic) after the announcement of the L-Mount Alliance on 25 September 2018 at photokina in Cologne

Panasonic Lumix S1R with prime lens 50 mm f/1.4 at photokina in September 2018

L-Mount Alliance

Main article: L-Mount Alliance

On 25 September 2018, the L-Mount Alliance between Leica, Panasonic and Sigma was announced, enabling the partners "to make use of the L-Mount standard developed by Leica for their own developments and to offer both cameras and lenses utilising this lens mount" with full compatibility between the three companies' products.^[10]

According to Sigma CEO, Kazuto Yamaki, the "L-mount system is not exactly the same as the existing one. We updated it a little bit to work better with such lenses through lens adapters."^[3]

On the same day, Panasonic announced its S1R and S1 full-frame L-Mount cameras and three L-Mount lenses, with seven more lenses to be launched by 2020.^[11][3]

Sigma announced that it will launch a full-frame camera in 2019, using the L-Mount and the company's Foveon sensor, as well as a range of L-mount lenses and adapters for Sigma SA and Canon EF lenses.^[12]

Six cameras and 39 native lenses are confirmed for the L-Mount by 2020.

Cameras

APS-C

Leica T/TL cameras use APS-C sensors. The TL mount version is not dust- or splashproof.

Discontinued

• Leica T (Typ 701)
• Leica TL
• Leica TL2
• Leica CL (2017)

Full-frame

Leica SL cameras use full-frame sensors. The SL version is dust- and splashproof.

Current

• Blackmagic Cinema Camera 6K^[13][14]
• Blackmagic PYXIS 6K^[15]
• DJI Ronin 4D
• Leica SL (Typ 601)
• Leica SL2
• Leica SL2-S
• Leica SL3
• Leica SL3S
• Panasonic S1R^[16]
• Panasonic Lumix S1^[16]
• Panasonic Lumix S1H^[16]
• Panasonic LUMIX BS1H
• Panasonic Lumix S5^[17]
• Panasonic Lumix S5II/S5IIX
• Panasonic Lumix S9
• Sigma fp^[18]
• Sigma fp L

Upcoming

• Sigma BF^[19]

Withdrawn

• Unspecified Foveon-based full-frame Sigma^[20]

Lenses

Leica has an existing range of fifteen L-Mount lenses.^[21]

Panasonic committed to releasing a total of ten lenses for the L-mount by the end of 2020, beginning with the 50mm F/1.4 prime and the two zooms listed below; stating that they would provide details at Photokina 2019. ^[22]

Sigma plans to release a wide range of lenses. 14 primes from Sigma's 'Global Vision' range, primarily designed for reflex cameras with short flange depths and currently available for the mirrorless Sony E-mount, will also be released in L-Mount from 2019.^[3][23] These will be followed by a range designed specifically for mirrorless parameters.

APS-C

Prime

• Leica APO-Macro-Elmarit-TL 1:2.8 / 60 ASPH
• Leica Summilux-TL 1:1.4 / 35 ASPH
• Leica Summicron-TL 1:2 / 23 ASPH
• Leica Elmarit-TL 1:2.8 / 18 ASPH
• Sigma 16mm f/1.4 DC DN Contemporary^[3]
• Sigma 30mm f/1.4 DC DN Contemporary^[3]
• Sigma 56mm f/1.4 DC DN Contemporary^[3]

Zoom

• Leica Super-Vario-Elmar-TL 1:3.5-4.5 / 11-23 ASPH
• Leica Vario-Elmar-TL 1:3.5-5.6 / 18-56 ASPH
• Leica APO-Vario-Elmar-TL 1:3.5-4.5 / 55-135 ASPH
• Sigma 18-50 f/2.8 DC DN Contemporary
• Sigma 10-18 f/2.8 DC DN Contemporary

Full-frame

Panasonic Lumix S full-frame L-mount lenses: 50 mm f/1,4, 70-200 mm and 24-105 mm

Prime

• Leica Summilux-SL 1:1.4 / 50 ASPH
• Leica APO-Summicron-SL 1:2 / 75 ASPH
• Leica APO-Summicron-SL 1:2 / 90 ASPH
• Leica APO-Summicron-SL 1:2 / 35 ASPH
• Leica APO-Summicron-SL 1:2 / 50 ASPH
• Leica APO-Summicron-SL 1:2 / 28 ASPH^[24]
• Panasonic Lumix S 18mm f/1.8
• Panasonic Lumix S 24mm f/1.8
• Panasonic Lumix S 35mm f/1.8
• Panasonic Lumix S PRO 50mm f/1.4^[25][26]
• Panasonic Lumix S 50mm f/1.8
• Panasonic Lumix S 85mm f/1.8
• Panasonic Lumix S 100mm f/2.8 Macro
• Sigma 17mm f/4 DG DN Contemporary
• Sigma 20mm f/2 DG DN Contemporary
• Sigma 24mm f/2 DG DN Contemporary
• Sigma 24mm f/3.5 DG DN Contemporary
• Sigma 35mm f/2 DG DN Contemporary
• Sigma 45mm f/2.8 DG DN Contemporary
• Sigma 50mm f/2 DG DN Contemporary
• Sigma 65mm f/2 DG DN Contemporary
• Sigma 90mm f/2.8 DG DN Contemporary
• Sigma 14mm f/1.4 DG DN Art
• Sigma 20mm f/1.4 DG DN Art
• Sigma 24mm f/1.4 DG DN Art
• Sigma 35mm f/1.2 DG DN Art
• Sigma 35mm f/1.4 DG DN Art
• Sigma 50mm f/1.4 DG DN Art
• Sigma 85mm f/1.4 DG DN Art
• Sigma 105mm f/2.8 DG DN MACRO Art
• Sigma 14mm f/1.8 DG HSM Art^[3]
• Sigma 20mm f/1.4 DG HSM Art^[3]
• Sigma 24mm f/1.4 DG HSM Art^[3]
• Sigma 28mm f/1.4 DG HSM Art^[3]
• Sigma 35mm f/1.4 DG HSM Art^[3]
• Sigma 40mm f/1.4 DG HSM Art^[3]
• Sigma 50mm f/1.4 DG HSM Art^[3]
• Sigma 70mm f/2.8 DG MACRO Art
• Sigma 85mm f/1.4 DG HSM Art^[3]
• Sigma 105mm f/1.4 DG HSM Art^[3]
• Sigma 135mm f/1.8 DG HSM Art^[3]
• Sigma 500mm f/5.6 DG DN OS Sports

Zoom

• Leica Vario-Elmarit-SL 24–70 mm 2,8 ASPH
• Leica Vario-Elmarit-SL 1:2.8-4 / 24-90 ASPH
• Leica APO-Vario-Elmarit-SL 1:2.8-4 / 90-280
• Leica Super-Vario-Elmar-SL 1:3.5-4.5 / 16-35 ASPH
• Panasonic LUMIX S PRO 16-35mm f/4
• Panasonic LUMIX S 20-60mm f/3.5-5.6
• Panasonic LUMIX S PRO 24-70mm f/2.8
• Panasonic LUMIX S 24-105mm f/4 MACRO O.I.S.
• Panasonic LUMIX S 28-200mm 4-7.1 Macro O.I.S.
• Panasonic LUMIX S PRO 70-200mm f/4 O.I.S.
• Panasonic LUMIX S PRO 70-200mm f/2.8 O.I.S.
• Panasonic LUMIX S 70–300 mm 4.5-5.6 Macro OIS
• Panasonic Lumix S 14-28mm F4-5.6 Macro
• Sigma 14-24mm f/2.8 DG DN Art
• Sigma 16-28mm f/2.8 DG DN Contemporary
• Sigma 24-70mm f/2.8 DG DN Art
• Sigma 28-70mm f/2.8 DG DN Contemporary
• Sigma 70-200mm f/2.8 DG DN Sports
• Sigma 100-400mm f/5-6.3 DG DN OS Contemporary
• Sigma 150-600mm f/5-6.3 DG DN OS Sports
• Sigma 60-600mm f/4.5-6.3 DG DN OS Sports
• Samyang AF 35-150mm F2-2.8 L^[27]

Third-party

Manual third-party lenses are being produced in L-mount by Irix Cine, 7Artisans (Photoelectric series), Meyer-Optik (Görlitz series), and Kipon HandeVision (IBELUX and IBERIT series').^{[citation needed]}

Lens adapters

• Leica R-Adapter L
• Leica S-Adapter L
• Leica M-Adapter L
• Leica PL-Adapter L
• Novoflex SL-EOS Adapter ^[28]
• Novoflex SL/NIK Adapter
• Sigma MC-21 SA-L
• Sigma MC-21 EF-L Sigma-manufactured 'Global Vision' EF-mount lenses are fully supported and compatible; although non-Sigma EF-mount lenses remain unguaranteed.^[3]