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lensmount

Canon · DSLR / SLR mount

Canon EF-S — flange distance, protocol, and adapter compatibility

APS-C-only variant of EF with a protruding rear element that physically prevents mounting on full-frame EF bodies. Shares EF's flange distance and electronic protocol — every EF-S lens behaves like an EF lens on compatible bodies. Discontinued in 2018 as Canon moved its APS-C line to EF-M and then RF-S.

Mount specifications

Flange focal distance
44 mm
Throat diameter
54 mm
Electronic protocol
Canon EF
Supported formats
APS-C
Manufacturer
Canon
Introduced
2003 (discontinued)
Status
Discontinued

Adapting Canon EF-S lenses onto other bodies

You own Canon EF-S glass and want to mount it on a body with a different lens mount. Rows are sorted by feasibility.

Body mountResultAdapter examplesCaveats
Canon RF
flange 20 mm
Mechanical
AF fullIS fullAp. electronicvignettes
  • Canon EF-EOS R
  • Body auto-crops to APS-C (1.6×); resolution drops accordingly on full-frame RF bodies.
Canon EF-M
flange 18 mm
Mechanical
AF fullIS fullAp. electronic
  • Canon EF-EOS M
  • Native image circle for EF-M's APS-C sensor.
Nikon Z
flange 16 mm
Mechanical
MFIS lens-onlyAp. wheelvignettes
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Nikon Z body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Sony E (incl. FE)
flange 18 mm
Mechanical
MFIS lens-onlyAp. wheelvignettes
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Sony E (incl. FE) body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Fujifilm X
flange 17.7 mm
Mechanical
MFIS lens-onlyAp. wheel
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Fujifilm X body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Fujifilm GFX (G-mount)
flange 26.7 mm
Mechanical
MFIS lens-onlyAp. wheelvignettes
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Fujifilm GFX (G-mount) body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Micro Four Thirds
flange 19.25 mm
Mechanical
MFIS lens-onlyAp. wheel1.33× crop
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Micro Four Thirds body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
L-Mount
flange 20 mm
Mechanical
MFIS lens-onlyAp. wheelvignettes
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and L-Mount body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Leica M
flange 27.8 mm
Mechanical
MFIS lens-onlyAp. wheelvignettes
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Leica M body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Canon RF (cine)
flange 20 mm
Mechanical
MFIS lens-onlyAp. wheelvignettes
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Canon RF (cine) body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
C-mount
flange 17.526 mm
Mechanical
MFIS lens-onlyAp. wheel1.8× crop
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and C-mount body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Konica AR
flange 40.5 mm
Mechanical
MFIS lens-onlyAp. wheelvignettes
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Canon EF-S lens and Konica AR body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
Canon EF
flange 44 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.0 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Nikon F
flange 46.5 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -2.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Sony A / Minolta A
flange 44.5 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -0.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
M42 (Pentax / Praktica screw mount)
flange 45.46 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -1.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Pentax K
flange 45.46 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -1.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
PL (Positive Lock)
flange 52 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -8.0 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Canon EF (cine)
flange 44 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.0 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Exakta
flange 44.7 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -0.7 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
T-mount (T2)
flange 55 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -11.0 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Praktica B
flange 44.4 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only -0.4 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Minolta SR / MC / MD
flange 43.5 mm
Speed booster
MFIS lens-onlyAp. wheelvignettes
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.

Adapting other lenses onto a Canon EF-S body

You own a Canon EF-S body and want to mount glass from other systems. Mirrorless-lens-onto-DSLR-body combinations are omitted (rear element collides with the mirror box).

Lens mountResultAdapter examplesCaveats
Nikon F
flange 46.5 mm
Mechanical
MFIS lens-onlyAp. wheel1.5× crop
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between Nikon F lens and Canon EF-S body.
  • Lens has no aperture ring; choose an adapter with a built-in aperture-control wheel.
PL (Positive Lock)
flange 52 mm
Mechanical
MFIS lens-onlyAp. ring1.5× crop
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between PL (Positive Lock) lens and Canon EF-S body.
T-mount (T2)
flange 55 mm
Mechanical
MFIS lens-onlyAp. ring1.5× crop
  • generic mechanical adapter ring (multiple vendors)
  • Mechanical adapter only — no electronic communication between T-mount (T2) lens and Canon EF-S body.
Canon EF
flange 44 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.0 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Sony A / Minolta A
flange 44.5 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
M42 (Pentax / Praktica screw mount)
flange 45.46 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only 1.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Pentax K
flange 45.46 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only 1.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Canon EF (cine)
flange 44 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.0 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Exakta
flange 44.7 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.7 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Praktica B
flange 44.4 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only 0.4 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Konica AR
flange 40.5 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only -3.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.
Minolta SR / MC / MD
flange 43.5 mm
Speed booster
MFIS lens-onlyAp. wheel1.5× crop
  • Speed Booster / focal-reducer family
  • Flange clearance is only -0.5 mm — a plain mechanical adapter cannot reach infinity focus; a focal reducer (Speed Booster) with optical glass is required.
  • Speed Boosters typically widen the effective focal length (~0.71×) and add ~1 stop of light, which can be desirable on crop bodies.

References

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