Canon USA has issued an official statement regarding the black dot problem with the EOS 5D Mark II DSLR reported by some users under certain circumstances.
Canon said they are â€œcurrently investigating and analyzing the causes, and examining measures to reduce or eliminate these phenomena by providing correction firmware. An announcement will be made on the Canon Web site when such measures have been determined.â€
The issue involves a â€œblack dotâ€ phenomenon which shows when images are enlarged or printed more than 100 percent of its resolution. A corollary issue is vertical banding noise when the recording format is set to sRAW1. Canon has promised to fix both via firmware.
[Via: Canon USA]