Decoding Date Codes - How is it done?

[Timm]

I've seen reference to 'Date Codes' on various posts relating to the production dates of various lenses.

Is there a site which translates these into a comprehensible form for a noob like myself, or does it just take some basic math based on the realease date of the lens type in question? :confused:

[pradeep1]

http://www.the-digital-picture.com/Canon-Lenses/Canon-Lens-Aging.aspx

[Medic1]

Interesting....

[Timm]

:D Cheers Pradeep, just the info I was looking for! :D