https://community.usa.canon.com/t5/EF-RF-Lenses/How-do-you-read-date-code/m-p/56621#M15579 UR0500 = May 2003<BR />More here: <A target="_blank" href="http://www.the-digital-picture.com/Canon-Lenses/Canon-Lens-Aging.aspx">http://www.the-digital-picture.com/Canon-Lenses/Canon-Lens-Aging.aspx</A><BR /> Thu, 26 Dec 2013 19:44:55 GMT hsbn 2013-12-26T19:44:55Z https://community.usa.canon.com/t5/EF-RF-Lenses/How-do-you-read-date-code/m-p/56603#M15578 <P><STRONG><FONT face="georgia,palatino">How do you read the date code. The code that I can find is UR0500.<BR /></FONT></STRONG></P> Thu, 26 Dec 2013 18:33:10 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/How-do-you-read-date-code/m-p/56603#M15578 chaplain 2013-12-26T18:33:10Z https://community.usa.canon.com/t5/EF-RF-Lenses/How-do-you-read-date-code/m-p/56621#M15579 UR0500 = May 2003<BR />More here: <A target="_blank" href="http://www.the-digital-picture.com/Canon-Lenses/Canon-Lens-Aging.aspx">http://www.the-digital-picture.com/Canon-Lenses/Canon-Lens-Aging.aspx</A><BR /> Thu, 26 Dec 2013 19:44:55 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/How-do-you-read-date-code/m-p/56621#M15579 hsbn 2013-12-26T19:44:55Z