Lens adapter Voigtlander Leica M to Sony E mount - Version II, model BD260C

The Voigtlander Leica M to Sony E mount adapter (Version II, model BD260C) permits the mechanical coupling of Leica M-mount rangefinder lenses to Sony E-mount mirrorless cameras while preserving the correct flange focal distance. It is built to enable precise manual focus operation and to retain the original optical characteristics of M-mount lenses on compatible Sony bodies for stills and video use.

Advantages

The adapter maintains accurate lens-to-sensor spacing to preserve infinity focus and optical performance. Its metal construction ensures a secure, repeatable connection between lens and camera and resists wear from regular mounting and dismounting. The design preserves the manual aperture and focus control of Leica M lenses, allowing photographers to use legacy and modern M optics on Sony mirrorless systems without electronic coupling.

Suitable for

• Photographers who want to use Leica M lenses on Sony E-mount mirrorless cameras
• Cinematographers seeking manual-focus cine looks with rangefinder optics
• Users adapting vintage or specialty M-mount glass to modern Sony bodies

Key specifications

• Mount conversion: Leica M mount (lens) to Sony E mount (camera)
• Version: Version II mechanical adapter
• Material: durable metal alloy construction for stability and longevity
• Maintains correct flange focal distance for accurate infinity focus
• Supports manual focus and mechanical aperture control of mounted lenses
• Compatible with stills and video shooting on mirrorless Sony bodies

How to use

Attach the adapter to the Leica M lens by aligning the lens mount with the adapter and rotating until it locks into place. Then align the adapter-mounted lens with the Sony E camera bayonet and rotate until the camera’s mount latch engages. Use the camera in manual exposure and focus modes; focus is achieved through the lens focusing ring and, when available, camera focus aids such as focus peaking or magnification. Set the lens aperture manually on lenses with mechanical diaphragms. Remove the adapter by reversing the mounting steps, taking care to support the lens to avoid stress on the mount.

Usage recommendations

For best results, use with cameras that provide focus assist features (focus peaking, magnified live view) to compensate for the adapter’s manual focusing. Avoid forcing mounts when attaching or detaching; keep mechanical surfaces clean and free of grit. If using lenses with protruding rear elements, confirm clearance to avoid contact with the camera sensor or shutter mechanism.