match Technical Services. Or also "Pimp your Leica" - because he delivers some interesting accessories (ocular loupes, thumb holders, silly-looking soft releases) and the practical M-Coder Kit, with which you can apply the coding to the Leica lenses (or also third-party lenses) for automatic recognition on the M8/M8.2/M9 yourself (temporarily, as the color wears off when changing). I'm still considering whether it's worth it - the M-lenses (and the Zeiss lens) that I have are characterized by very slight deviations from the optimum. Both in terms of distortion and vignetting (it has advantages when you waive ultra-brightness), so I haven't felt the need for the corrections from the lens profile yet.