Wednesday, April 25, 2012

Canon Explained 5D Mark III Light Leak Fiasco

After two weeks of rumors, speculations; yesterday Canon finally released their second product advisory regarding the 5D Mk III light leak issue.

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.


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.)


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

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

After reading the release from Canon OSA, one of my friend who is the proud owner of a 5D MkIII was disappointed that the issue is being brushed off so nonchalantly by Canon.

"After specifying the serial numbers of affected cameras, Canon actually admitting there is a problem!  Don't you think they should start a RECALL?", he fumed.

And by releasing the affected serial numbers, would that be confirming it is a quality control problem? Did Canon have prior knowledge that the said problem existed after they shipped the cameras?

Do you think Canon should RECALL those affected cameras?

Is Canon PLAYING DOWN the issue?

Canon also just issued firmware version 1.1.2 for the 5D Mark III with fixes for various unrelated bugs.

You Might Also Like:

How Canon Fix 5D Mark III Light Leak!


Anonymous said...

Martyn here
Mine has a 1 as the 6th number

cy.leow said...

Hi Martyn..why don't you try the darkness test and see if yours got the same problem? Or you can wait and see what Canon NZ have to say about this. If you ask me, as long as all your shots are ok, I will not worry about it. CY

Anonymous said...

No I'm not worried, but do feel the price I paid for it they should be obliged to fix it, if i have the problem

Unknown said...

Canon Inc. is a global brand and has seen surge in popularity because of the rising customer interest in the consumer, office, and industrial solutions provided by the company. Despite economic slowdown and low consumer confidence in U.S. and Europe, customers continue to buy canon products over the period of time.

cy.leow said...

What are you trying to say Alex?

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