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Canon developing firmware update to address EOS 5D Mark II "black dots" problem  
Thursday, December 18, 2008 | by Rob Galbraith
Canon in Australia, Europe, Japan, Korea and the U.S. are among the sales companies that have now posted official information on the "black dots" problem impacting the Canon EOS 5D Mark II. All but one of the service notices we've seen indicate that Canon is developing a firmware update to address the problem, as well as an instance of vertical banding that can occur when the camera is set to sRAW1.

More information is in the Canon USA service notice below. Other service notices:

Canon USA Service Notice

Thank you for using Canon products.

We have learned that some users of the Canon EOS 5D Mark II digital SLR camera have identified two types of image quality phenomena that appear under certain shooting conditions.
  1. “Black dot” phenomenon (the right side of point light sources becomes black)
  2. Vertical banding noise
We are currently investigating and analysing 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.

Details of the phenomena and shooting conditions under which they are likely to occur are as follows.
  1. “Black dot” phenomenon (the right side of point light sources becomes black)
    When shooting night scenes, the right side of point light sources (such as lights from building windows) may become black. The phenomenon may become visible if the images are enlarged to 100% or above on a monitor or, if large prints of the images are made.
  2. Vertical banding noise
    If the recording format is set to sRAW1, vertical banding noise may become visible depending on the camera settings, subject, and background.
  • Vertical banding noise is not noticeable if the recording format is set to sRAW2.
  • Vertical banding noise does not occur if the recording format is set to RAW or JPEG.
  • Noise can be reduced if C.Fn II-3: Highlight tone priority is set to 0: Disable.
Canon always strives to provide the highest quality products to our customers. We apologize for any inconvenience these phenomena may have caused. We appreciate your kind patronage and support.

This information is for residents of the United States and Puerto Rico only. If you do not reside in the USA or Puerto Rico, please contact the Canon Customer Support Center in your region.

Contact Information for Inquiries
Call Center
1-800-828-4040 (toll free)
8:00 a.m. - Midnight, EST (M-F)
10:00 a.m. - 8:00 p.m., EST (Sat.)

Revision History
December 19, 2008: Added links to additional sales company service notices.

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