![]() ![]() The Canon lens date code chart is shown below. Determine the age of a Canon lens based on the 10-digit serial number To age a Canon lens using the 10-digital serial number, we dissect the serial number as follows: DD C SSSSSSS The DD is the key to the date the lens was manufactured - the production date code. ![]() For information on determining the age of a pre-10-digit serial number lens, see the section on interpreting the old date code below. However, now we can age a lens based on the serial number alone. We loved the date code because it made aging a lens easy. While date codes and the shorter serial number are still found on some lenses, this inclusion will likely end completely. Determining the Age of a Canon Lens Using Serial Numbers and Date Codes Canon has been transitioning to a 10-digit lens serial number (starting in 2008 with the Canon EF-S 18-200mm f/3.5-5.6 IS Lens) and ending the inclusion of a separate manufacturing date code.
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