Canon 5D Mark III Service Notice re: LCD Light Leak

Canon 5D Mark III Service Notice

Canon has issued a service notice for the 5D Mark III regarding a light leak from the LCD panel that can affect the AE sensor’s exposure value.

See the full notice below.

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

Thank you for using Canon products.

The phenomenon described below has been confirmed when using the Canon EOS 5D Mark III Digital SLR Camera.
Canon is now examining the countermeasures and once the countermeasures are decided, we will post the information on our Web site.

In extremely dark environments, if the LCD panel illuminates, the displayed exposure value may change as a result of the AE sensor’s detection of light from the LCD panel.

Affected Product
Canon EOS 5D Mark III Digital SLR Camera

Once the preparations are complete, we will be making an announcement on our Web site.

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
TDD: 1-866-251-3752
For additional support options:

[Canon USA]



  1. says

    it would be nice if the lcd light leak on the 5D MIII will be fixed by a firmware update that will ALSO take care of the horrible VF illumination. In dark settings the af points don’t show unless I first hit a button to light them all up to see which AF I’m using; in bright light the red VF illumination cannot be even seen, and in the dark is a large flare of red smearing all over and very distracting, VERY very disappointed for a $3850 camera.The rest is awesome but the illumination is…horrible, it does not belong on the 5DMark III, plenty people I know are upset about it. Each Af point should have had its own led, not a VF side light smear.

  2. Eugene Powers says

    3 years!!!! Not much of the upgrade and now this.
    Canon lost it!!!!
    Still waiting for my Nikon D800E.

  3. JOE PRETE says

    It gives you an idea of just how critical these High Tech cameras are. It doesn’t take much to go wrong and potentially ruin a Photograph that may not be replaceable. At least it was caught early. I’m sure Canon will have a remedy soon.

  4. says

    I was looking forward to purchasing this camera, however, the inability to see the selected focusing point in dark or very bright light has rendered the 5D Mark III useless to me. In addition, trying to follow action with the focusing poiunt or focus on dark skin is impossible. Doesn’t Canon have professional photographers test their professional line of cameras in a myriad of less than ideal scenarios to determine how to optimize their usefulness? I don’t think a firmware upgrade will fix this!