Canon Offers Free Inspections of 5D Mark III Cameras with Possible Exposure Metering Issue


APRIL 24, 2012

By Dan Havlik

Canon did damage control this week on a potential exposure metering issue with its new 22.3-megapixel EOS 5D Mark III full-frame digital SLR, saying it would offer free inspections to any 5D III in the United States or Puerto Rico.

The offer came in the form of a product advisory on the Canon USA website.

The advisory was a follow-up to a similarly worded notice on the Canon 5D Mark III from April 13th, saying that when the camera's "LCD panel illuminates in extremely dark environments, the displayed exposure value may change."

Some websites, including this one initially, have described the problem as a "light leak" though that is not entirely accurate. The problem does not appear to result from light "leaking" onto the 5D Mark III's full-frame sensor. Rather, the camera's metering system can pick up flare from the 5D Mark III's 3.2-inch rear LCD screen that will produce an exposure metering error in extremely dark situations.

In the latest product advisory, which is reprinted below, Canon said it would begin inspections in mid-May.


Product Advisories

To Users of the Canon EOS 5D Mark III Digital SLR Camera

Thank you for using Canon products.

Concerning the EOS 5D Mark III digital SLR camera, when the LCD panel illuminates in extremely dark environments, the displayed exposure value may change. Canon has concluded the investigation of this phenomenon, and this announcement informs you of our findings as described below.

Phenomenon


In extremely dark environments, if the LCD panel illuminates, the displayed exposure value may change. However, based on the results of extensive testing this change in exposure value will not noticeably affect the captured image.

Affected Product


Canon EOS 5D Mark III Digital SLR Camera
*Products whose sixth digit in the serial number is 1 or 2 are affected. 
   For example, “xxxxx1xxxxxx” or “xxxxx2xxxxxx” ([x] represents any optional number.)

Support


Under almost all shooting conditions (including dark environments) this phenomenon will not affect your captured images. However, if you would like Canon to inspect your camera, we will provide this service free of charge upon request beginning in mid-May. Please contact Canon using the information below to request service.

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.

Please register the EOS 5D Mark III. By registering, we will be able to notify you via email when service updates are available. If you already registered, please ensure you are opted-in to receive the notification.

Thank you,


Customer Support Operations
Canon U.S.A., Inc

Contact Information for Inquiries
Canon Customer Support Center
Phone: 1-800-OK-CANON
1-800-652-2666
TDD: 1-866-251-3752
Email: carecenter@cits.canon.com
For additional support options: www.usa.canon.com/support

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