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Adapter compatibility · Konica → Leica

Konica AR to Leica M adapter compatibility

Mounting a Konica AR lens on a Leica M body — the feasibility verdict, AF / IS / aperture-control / infinity-focus outcome, image-circle relationship, official and reputable third-party adapter SKUs, and the caveats worth knowing before you buy.

Verdict at a glance

Mechanical
MFno ISAp. ring

Mount specs

Lens side

Konica AR

Flange distance
40.5 mm
Protocol
Mechanical only
Type
legacy-SLR

Body side

Leica M

Flange distance
27.8 mm
Protocol
Mechanical only
Type
rangefinder

Flange-distance gap the adapter fills: 12.70 mm (40.5 mm − 27.8 mm). That gap is what a mechanical adapter has to fill to hold the lens at its design distance from the sensor.

Flange-distance schematic. Two rails share a sensor plane on the right. The Leica M body register measures 27.8 millimetres; the Konica AR lens needs 40.5 millimetres. The orange region between their left edges is the 12.70 millimetre gap an adapter spans.Sensor planeLeica M body · 27.8 mmKonica AR lens · 40.5 mm+12.70 mm adapter
Both distances right-aligned to the sensor. The 12.70 mm gap between the Leica M body register and the Konica AR lens (orange) is exactly what a mechanical adapter fills to hold the lens at its design distance.

Adapter examples

  • generic mechanical adapter ring (multiple vendors)

Caveats

  • Mechanical adapter only — no electronic communication between Konica AR lens and Leica M body.

Common questions

Will Konica AR lenses autofocus on a Leica M body through an adapter?
Autofocus is not applicable to this pairing — the Konica AR mount predates electronic AF, or the bodies in this family do not implement AF for adapted lenses.
Does in-lens image stabilization (IS / VR / OS) still work through a Konica AR → Leica M adapter?
Stabilisation is not applicable — Konica AR lenses in this family do not ship with in-lens stabilisation, or the adapter pair predates the IS protocol entirely.
What's the most-recommended Konica AR → Leica M adapter?
No SKU in our curated catalogue covers Konica AR → Leica M yet. Adapter examples photographers commonly use include the generic mechanical adapter ring (multiple vendors). Pair compatibility is mostly mechanical, so any well-built adapter at the correct flange distance should work — pick on build quality and tripod-foot integration.

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