Canon Announcement on 5D Mk lll Low Light Issue, and Effected Serial Numbers

For those of you who have been concerned about the 5D Mark lll low level light metering issue, and for those of you who haven’t really bothered to follow it during the rumor stage but are interested in the results, Canon has made an announcement on the topic that should be of interest.

I’ve been working with this camera with a number of associates. We’ll check our serial numbers, but have not found this to be a serious concern. Here is Canon’s statement:

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

Information for Inquiries

Canon Customer Support Center

Phone:    1–800-OK-CANON


For addi­tio­nal sup­port options:

Credits: C. David Tobie, Copyright 2012. Website: Return to Blog’s Main Page

Published by cdtobie

This blog covers a range of issues of interest to photographers and those involved in the digital photographic workflow, digital tools and platforms, and fine art output.

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