Pentax releases service notice for K-5 DSLR
Photography News / Digital Camera Reviews
Pentax is offering a free service to users of K-5 DSLRs that have been affected by the widely reported 'stained image sensor' issue. The company believes the problem occurred during the manufacturing process of the first batch of K-5's and cannot be resolved by ordinary sensor cleaning methods. Affected camera owners can contact the company's customer service center to send their cameras for the repair.
Source: News: Digital Photography Review (dpreview.com)