Leica M Coding Tool

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Lenses featuring M mount compatibility for Leica M cameras can be easily coded using this versatile tool. Simply attach the tool to the lens mount, push it downwards and rotate until it clicks securely into place within the milled nut of the mount. A waterproof black pencil is ideal for this process; use a sharp tip to paint the code through each of the 6 holes provided by the tool. I found Edding 8400 (a CD marker) to be an effective choice for coding my lenses. The codes listed on the following webpage worked seamlessly for me: https://www.devonbuy.com/how-to-6-bit-code-leica-m-lens/. It's worth noting that the coding process is compatible with frame selectors, so ensure you use a suitable adapter for your specific focus length.