Leica M-mount

E785557

bayonet lens mount lens mount

The Leica M-mount is a bayonet-style lens mount system introduced by Leica in the 1950s, renowned for its compact, high-precision rangefinder lenses and enduring use in Leica’s M-series cameras.

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All labels observed (3)

Label	Occurrences
Leica M-mount canonical	3
Leica M bayonet	1
Leica M mount	1

How this entity was disambiguated

This entity first appeared as the object of triple T9214928 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Leica M-mount
Context triple: [Leica rangefinder camera, lensMount, Leica M-mount]

A. L-Mount Alliance systems
L-Mount Alliance systems are a family of mirrorless camera and lens ecosystems jointly developed by Leica, Panasonic, and Sigma around the shared L-mount standard.
B. Fujifilm X-mount
Fujifilm X-mount is Fujifilm’s interchangeable lens mount system designed for its APS-C mirrorless digital cameras, supporting a wide range of XF and XC lenses.
C. Canon EF-M lens mount
The Canon EF-M lens mount is a compact, mirrorless camera lens interface designed by Canon for its EOS M series cameras, supporting lightweight, interchangeable lenses optimized for smaller bodies.
D. Sony A-mount
Sony A-mount is a lens mount system originally developed by Minolta and later adopted by Sony for its DSLR and SLT cameras, supporting a wide range of autofocus A-mount lenses.
E. Sony E-mount
Sony E-mount is a lens mount system developed by Sony for its mirrorless interchangeable-lens cameras and camcorders, known for its short flange distance and wide compatibility with various lenses.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Leica M-mount
Target entity description: The Leica M-mount is a bayonet-style lens mount system introduced by Leica in the 1950s, renowned for its compact, high-precision rangefinder lenses and enduring use in Leica’s M-series cameras.

A. L-Mount Alliance systems
L-Mount Alliance systems are a family of mirrorless camera and lens ecosystems jointly developed by Leica, Panasonic, and Sigma around the shared L-mount standard.
B. Fujifilm X-mount
Fujifilm X-mount is Fujifilm’s interchangeable lens mount system designed for its APS-C mirrorless digital cameras, supporting a wide range of XF and XC lenses.
C. Canon EF-M lens mount
The Canon EF-M lens mount is a compact, mirrorless camera lens interface designed by Canon for its EOS M series cameras, supporting lightweight, interchangeable lenses optimized for smaller bodies.
D. Sony A-mount
Sony A-mount is a lens mount system originally developed by Minolta and later adopted by Sony for its DSLR and SLT cameras, supporting a wide range of autofocus A-mount lenses.
E. Sony E-mount
Sony E-mount is a lens mount system developed by Sony for its mirrorless interchangeable-lens cameras and camcorders, known for its short flange distance and wide compatibility with various lenses.
F. None of above. chosen

Statements (61)

Predicate	Object
instanceOf	bayonet lens mount ⓘ lens mount ⓘ
alsoKnownAs	Leica M bayonet ⓘ linked to: Leica M-mount
canBeAdaptedTo	mirrorless digital cameras ⓘ
compatibleWithCamera	Leica M Typ 240 ⓘ Leica M-A (Typ 127) ⓘ Leica M10 ⓘ Leica M11 ⓘ Leica M2 ⓘ Leica M3 ⓘ Leica M4 ⓘ Leica M5 ⓘ Leica M6 ⓘ Leica M7 ⓘ Leica M8 ⓘ Leica M9 ⓘ Leica MP (film) ⓘ linked to: Leica rangefinder camera Leica Monochrom series ⓘ
designedFor	35mm film rangefinder cameras ⓘ
flangeFocalDistance	27.8 mm ⓘ
hasMechanicalCoupling	aperture indexing lug (on some lenses) ⓘ rangefinder cam ⓘ
innerThroatDiameter	44 mm ⓘ
introducedInYear	1954 ⓘ
introducedWithCamera	Leica M3 ⓘ
manufacturer	Leica Camera AG ⓘ
mountType	bayonet ⓘ
notableFeature	compact lens design ⓘ high-precision mechanical coupling ⓘ long-term backward compatibility ⓘ quiet operation ⓘ short register distance ⓘ
notableLensFamily	Leica Elmarit-M ⓘ linked to: Leica M lenses Leica Noctilux-M ⓘ linked to: Leica M lenses Leica Summicron-M ⓘ linked to: Leica M lenses Leica Summilux-M ⓘ linked to: Leica M lenses
predecessor	Leica thread mount ⓘ linked to: Leica screw-mount lenses (via adapter on M bodies)
regionOfOrigin	Germany ⓘ
supportsFocusingMethod	manual focus ⓘ rangefinder coupling ⓘ
supportsLensType	fast aperture lens ⓘ prime lens ⓘ standard lens ⓘ telephoto lens ⓘ wide-angle lens ⓘ
supportsMetering	through-the-lens metering on compatible bodies ⓘ
supportsRangefinderFramelines	135 mm ⓘ 28 mm ⓘ 35 mm ⓘ 50 mm ⓘ 75 mm ⓘ 90 mm ⓘ
thirdPartySupport	7Artisans M-mount lenses ⓘ TTArtisan M-mount lenses ⓘ Voigtländer M-mount lenses ⓘ Zeiss ZM lenses ⓘ linked to: ZEISS
usedBy	documentary photographers ⓘ professional photographers ⓘ street photographers ⓘ
usedInCameraSeries	Leica M-series ⓘ linked to: Leica M lenses
usedInCameraType	rangefinder camera ⓘ

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Leica rangefinder camera → lensMount → Leica M-mount ⓘ

Fujifilm X-mount → canAdaptFromMount → Leica M-mount ⓘ

Leica M-mount → alsoKnownAs → Leica M bayonet ⓘ

linked to: Leica M-mount

Leica M lenses → mountType → Leica M-mount ⓘ

Leica screw-mount lenses (via adapter on M bodies) → compatibleWithCameraMount → Leica M mount ⓘ