Some owners of a Leica M9, M9-P, M Monochrom or M-E may encounter optical aberrations (particularly at lower apertures) caused by a corrosion of the sensor glass. As a gesture of goodwill, Leica offer a free replacement service for the CCD sensors of cameras affected by this problem.
The offer applies regardless of the age of the camera, and also covers sensors that have already been replaced in the past. Customers who have previously been charged for the replacement of a sensor affected by this problem will receive a refund.
The afore-mentioned aberrations are connected to the properties of the CCD sensor, which features a specially coated, IR filter cover glass to ensure optimum imaging performance. Should this coating layer be damaged, corrosion effects may appear over time, altering the surface of the filter.
The CMOS sensor of the Leica M (Typ 240) is not affected by this problem. Should you consider an upgrade from your M9, M9-P, M Monochrom or M-E to a Leica M or M-P (Typ 240), Customer Care will be pleased to provide you with a preferential offer, following a check of your camera and depending on the specific model and its age.
If you find that your camera's imaging quality may be affected by this issue, we recommend that you send it directly to Leica Customer Care, or alternatively to the authorised Customer Care department of your country’s Leica distributor. To avoid delayed waiting times, cameras should only be sent to Customer Care after prior arrangement.
website: Leica Camera