Canon EF lens mount
E772200
The Canon EF lens mount is Canon's autofocus-enabled bayonet mount system introduced in 1987 for its EOS series cameras, supporting a wide range of interchangeable lenses for both film and digital SLRs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Canon EF lens mount canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9000561 — 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: Canon EF lens mount Context triple: [Canon EOS, uses, Canon EF lens mount]
-
A.
Canon EOS
Canon EOS is a popular line of Canon digital single-lens reflex and mirrorless cameras widely used by both enthusiasts and professional photographers.
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B.
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.
-
C.
Canon 70
Canon 70 is a decree issued by the Fourth Lateran Council in 1215, addressing ecclesiastical discipline and reform within the medieval Catholic Church.
-
D.
Canon 28
Canon 28 is a decree of the Council of Chalcedon that elevated the See of Constantinople to a position of primacy second only to Rome, reshaping the hierarchy of the early Christian Church.
-
E.
Canon 2
Canon 2 is a provision of the Code of Conduct for United States Judges that sets standards for avoiding impropriety and maintaining public confidence in the integrity and impartiality of the judiciary.
- 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: Canon EF lens mount Target entity description: The Canon EF lens mount is Canon's autofocus-enabled bayonet mount system introduced in 1987 for its EOS series cameras, supporting a wide range of interchangeable lenses for both film and digital SLRs.
-
A.
Canon EOS
Canon EOS is a popular line of Canon digital single-lens reflex and mirrorless cameras widely used by both enthusiasts and professional photographers.
-
B.
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.
-
C.
Canon 70
Canon 70 is a decree issued by the Fourth Lateran Council in 1215, addressing ecclesiastical discipline and reform within the medieval Catholic Church.
-
D.
Canon 28
Canon 28 is a decree of the Council of Chalcedon that elevated the See of Constantinople to a position of primacy second only to Rome, reshaping the hierarchy of the early Christian Church.
-
E.
Canon 2
Canon 2 is a provision of the Code of Conduct for United States Judges that sets standards for avoiding impropriety and maintaining public confidence in the integrity and impartiality of the judiciary.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
camera hardware interface
ⓘ
lens mount ⓘ |
| adaptationFromFD | requires optical or mechanical adapter ⓘ |
| communicationInterface | electronic contacts ⓘ |
| compatibilityWithFDLenses | not natively compatible ⓘ |
| compatibleWith |
Canon EF to EF-M adapters (for EOS M series)
NERFINISHED
ⓘ
Canon EF to RF adapters (for EOS R series) NERFINISHED ⓘ |
| designedFor | 35mm format ⓘ |
| ecosystem | extensive lineup of Canon and third-party lenses ⓘ |
| flangeFocalDistance | 44.0 mm ⓘ |
| focusDrive | in-lens motor ⓘ |
| hasVariant |
Canon EF-M mount (derived system)
NERFINISHED
ⓘ
Canon EF-S mount NERFINISHED ⓘ Canon RF mount (successor system) NERFINISHED ⓘ |
| introducedFor | Canon EOS system NERFINISHED ⓘ |
| introducedInYear | 1987 ⓘ |
| manufacturer | Canon Inc. NERFINISHED ⓘ |
| mechanicalApertureCoupling | no ⓘ |
| mountDiameter | 54 mm ⓘ |
| mountType | bayonet mount ⓘ |
| notableFeature |
all-electronic interface without mechanical linkages
ⓘ
large throat diameter relative to 35mm frame ⓘ wide range of available focal lengths ⓘ |
| primaryUse | interchangeable-lens SLR photography ⓘ |
| replaced | Canon FD lens mount NERFINISHED ⓘ |
| status | mature system still in use ⓘ |
| successor | Canon RF lens mount NERFINISHED ⓘ |
| supports |
autofocus
ⓘ
electronic aperture control ⓘ electronic lens-camera communication ⓘ |
| supportsElectronicManualFocus | yes (on compatible lenses) GENERATED ⓘ |
| supportsFocusingModes |
autofocus
GENERATED
ⓘ
manual focus GENERATED ⓘ |
| supportsImageStabilization | yes GENERATED ⓘ |
| supportsLensType |
Canon EF lenses
NERFINISHED
ⓘ
Canon EF-S lenses (on compatible APS-C bodies) NERFINISHED ⓘ Canon MP-E macro lenses NERFINISHED ⓘ Canon TS-E tilt-shift lenses NERFINISHED ⓘ third-party EF-mount lenses ⓘ |
| usedOn |
Canon EOS 35mm film cameras
NERFINISHED
ⓘ
Canon EOS APS-C DSLR cameras NERFINISHED ⓘ Canon EOS digital SLR cameras NERFINISHED ⓘ Canon EOS film SLR cameras NERFINISHED ⓘ Canon EOS full-frame DSLR cameras NERFINISHED ⓘ |
| usedWithSensorFormat |
APS-C
ⓘ
APS-H (historically) ⓘ full-frame ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Canon EF lens mount Description of subject: The Canon EF lens mount is Canon's autofocus-enabled bayonet mount system introduced in 1987 for its EOS series cameras, supporting a wide range of interchangeable lenses for both film and digital SLRs.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.