L-M Ring (Bayonet Ring)

Attaching the Leica (L39) Screw-Mount Lenses to the M body

The L-M Ring is ideal when the thickness is 1.00 mm with high precision.
(1.00 mm = Flange back difference of the Leica Screw-Mount and M-Mount)
Thickness error will influence the interlocking precision of the rangefinder.
The accuracy of the distance scale will be influenced by two-stage mounting on a mirrorless camera other than Leica.

RAYQUAL L-M Rings are manufactured with a high thickness precision of 1.00 mm, allowing for shooting that takes advantage of rangefinders and distance scales.

Furthermore, manufactured so that they can be attached and detached to the lens and camera body with a feel close to that of the genuine combination.

L-M Ring Notch Type

(Attaching the Leica Screw Lens to the M Body)

Compatible with lenses with an infinity lock lever.

Lenses with an infinity lock lever not compatible with the round type L-M ring can also be used.

L-M Ring Notch Type (Black)

Machined black chrome-plated brass

Black type, taking into account the internal reflection that has a significant impact on digital cameras.
Of course, recommended for film cameras as well.

Silver high reflection rate areas visible from the film surface are reduced.

Black L-M Ring
Equipment: Camera/ Leica M5, Lens/ Voigtlander HERIAR 50 mm F2 Cosina

Three types of L-M rings are available for focal lengths of the lens used
(35–135mm 28–90mm 50–75mm)

*The field of view will vary between the types when used with a rangefinder body. When using a mirrorless body by two-stage mounting with other adapters, any type may be used.


L-M 35・135L	L-M 28・90L	L-M 50・75L

Back (Camera side when attached)
There are two types of back surface shapes depending on the manufacturing lot.
The inner wall that affects the inner surface reflection is black for both types.

L-M Ring Notch Type (SIlver)

Machined chrome-plated brass
Silver type that matches the silver lenses or bodies

Three types of L-M rings are available for focal lengths of the lens used
(35–135 mm 28–90 mm 50–75 mm)

*The field of view will vary between types when used with a rangefinder body. When using a mirrorless body by two-stage mounting with other adapters, any type may be used.


L-M 35・135L	L-M 28・90L	L-M 50・75L

Back (Camera side when attached)