M-Coder Kit: 6-Bit Lens Coder for Leica M

The 6-bit encoder kit for any uncoded M-mount lens. Clips on, codes fast. Works with M/LM, ZM, VM, and most third-party lenses (Voigtländer, Zeiss, 7Artisans, TTArtisan, Thypoch, Light Lens Lab, Mandler).

Why code your lens

Your digital Leica recognises the lens. You get:

• Lens and focal length written into EXIF, searchable in Lightroom
• Built-in lens corrections applied for vignetting, chromatic aberration, and distortion. Cleaner JPEGs, less work on RAWs
• Correct IBIS on SL2 and SL3 when using the M adapter

Third-party lenses code to the closest Leica equivalent. The corrections still apply.

In the kit

• 6-bit encoder tool
• Black and white pens
• Printed instructions and lens code table
• QR code on the tool links to the latest online table

Find your lens code

Our lens code finder covers 200+ lenses: every Leica profile, plus third-party glass from Voigtländer, Zeiss, Light Lens Lab, Thypoch, TTArtisan, 7Artisans, Konica, Minolta, Mandler and more, including vintage screw-mount lenses. Search your lens, get its code, and see exactly which marks to paint. The printed table in the kit covers the most popular lenses; the finder is the full list and is kept up to date as new lenses appear.

For what the code actually does and how it is read, see why 6-bit code my lenses.

How long it takes

About 20 seconds to clean off a code and re-apply a new one. If your lens isn't listed, mount the camera on a tripod, shoot the same scene with a few candidate codes, pick the best result. A few lenses takes around 20 minutes.

Got a lens with a screw where a 1-bit mark should sit? Fill it with white, then leave it or mark over it in black.

SL2 and SL3 users get correct image stabilisation automatically. Jonathan Harris at Worldwide Camera Exchange explains why this matters:

Professional photographer Matt Osbourne reviewed version 1:

Credits

Lens code table from lavidaleica.com, originally compiled by Carsten Whimster with contributions from Sean Reid, Jan Dvorak, Dante Stella, and others in the Leica community. Product photography by Rikard Landberg.

International Shipping & Taxes:

• EU (Under ~€150): VAT is included and handled via IOSS. No surprise fees on delivery.
• EU (Over ~€150): A 17% VAT Relief discount is automatically applied at checkout. You will pay local VAT to the courier upon delivery.
• USA: Import duties are prepaid at checkout. No surprise fees on delivery.
• Rest of World: Local import duties or taxes may apply.