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Canon acknowledges 'light leak' in the EOS 5D Mark III
Photo Issues
Canon has published a product advisory acknowledging the existence of a 'light leak' issue on the EOS 5D Mark III. Users of the camera have reported that in dark conditions, switching on the top-LCD's back-illumination or shining a light on it alters the 5D Mark III's metering, suggesting a 'light leak' inside the camera body that is reaching the metering sensor. The company says it is investigating the problem and possible countermeasures and will make further announcements once a decisions has been made on resolving the issue. You can read the full product advisory on the Canon USA website. Petapixel.com reported on the issue and has linked to user videos which illustrate the problem.
Source: News: Digital Photography Review (dpreview.com)