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Leakgate: EOS 5D Mark III light-leaking issue confirmed by Canon!

So, now it is official! And not really the news I love to hear. The light-leaking issue of the 5D Mark III we reported before (and here and here) has been confirmed by Canon USA. The press release:

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:

This is the information about registering (click here):

Register your EOS SLR now and receive the following complimentary benefits*:

1. Receive firmware and software upgradesCanon USA often updates the software and firmware for its digital photography products. You will be among the first ones to receive the notifications.

2. Protect your product
We will keep the model number and date of purchase of your new Canon product on file to help you refer to this information in the event of an insurance claim such as loss or theft.

3. A Priority Code Good for 15% Off Purchases of Accessories for Camera, Lens and Flash Units at the Canon Online Store.
This offer does not apply to lens or flash units.Click here for terms and conditions.

4. Receive information on new products and promotions
Upon your request, we will send you information on Canon new products and promotions. Click here to view a sample newsletter

Please register only ONCE! Multiple registrations will be deleted.

*Offer valid in the U.S. only.

  • physica

    Will canon recall for repair or replacement…?

    • Frank

      That’s a good question! Dunno.

  • Jim

    Clearly a defect that Canon must fix.

    That said, many are blowing the *importance* of this out of proportion. I mean, under real-world circumstances the problem is very unlikely to affect anything. Check out the second video. It shows the problem happens with bright sunlight hitting the LCD with an exposure of ISO 400, f/1.2, at 4 – 10 secs., which is approx. EV -4 or -5! This corresponds to shooting on a dark night, away from city lights, which would be an odd time to have direct sunlight shining on the LCD!

    Anyway, it’s simple to guard against in the unlikely event that you are shooting in very dark conditions and you need to turn on the LED backlight WHILE taking a meter reading! Anyone with an affected camera needs to know not to take a meter reading with the LCD backlight on.

  • Stanley zheng

    It is not an issue at all in normal photography work situation, the object and the surrounding has to be dark for it to affect the ae. Even at f4, at 2 seconds iso 800 does not affect the ae metering when u turn on the lcd top light! with the lens cap off and view finder being covered. Is this really an issue??? at ISO 800, f4, at 2 seconds no change! I am surprised that people are really hyped abt this. the object you are metering and the surrounding has to be really dark for it to affect the ae metering!!!. My goodness and people are really getting so fussy abt this!! and who shoots with the lens cap ON?????????

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