Thank you for
using Canon products.
We have discovered that images taken by some EOS-1D Mark III and
EOS-1Ds Mark III digital SLR cameras may exhibit ring-shaped spots.
We would like to convey the details and our service policy.
We offer our most sincere apologies to customers using these
products who have been inconvenienced by this issue. Going forward,
we will spare no effort in our quality management to make sure our
customers can use our products with confidence. We hope our efforts
will earn your understanding.
Phenomenon
Images taken may exhibit large ring-shaped spots.
Cause
These ring-shaped spots are the images of oil lubricant on the
surface of the low pass filter (LPF), which is located in front of
the CMOS sensor.
This oil is used inside the Mirror Box to lubricate some of the
camera's moving parts. If the oil is applied too liberally when the
camera is manufactured, it can become scattered onto the surface of
the LPF through normal camera operation.
* Image of Back Side of Main Mirror
The image above shows the top of the mirror box when the main
mirror is flipped up. The white spots in the red circles are excess
lubricant oil.
Affected Products
EOS-1D Mark III and EOS-1Ds Mark III digital SLR cameras
Support
We ask that customers who are encountering this phenomenon or,
who have noticed that oil is visible on the surface of the back
side of the mirror, please contact our Customer Support Center. To
prevent oil from scattering, which may seriously affect images, our
Customer Support Center will arrange free cleaning of the
mirror box to affected customers to remove the excess oil.
Oil Lubricant Used in Cameras
Measures are being implemented to control the amount of lubricant
applied during manufacture in order to reduce the occurrence of oil
spots. However, because this lubricant is required to ensure proper
operation of the camera’s precision mechanical parts, it is
impossible to eliminate all instances of oil scattering. If you
require CMOS sensor cleaning, please contact our Customer Support
Center.
Thank you for your patronage and support of Canon products.
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
Canon U.S.A., Inc. Customer Support Center
1-800-828-4040 (toll free)
Email: carecenter@cits.canon.com
Click here for support options and hours of operation.
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