ahbian Senior Member May 23, 2006 2,465 0 0 Aug 13, 2010 #2 http://www.the-digital-picture.com/Canon-Lenses/Canon-Lens-Aging.aspx
wootsk Deregistered Aug 12, 2007 1,687 0 0 Small Island Aug 14, 2010 #3 UY lens 1 year younger than UX lens.
S Shahlan Senior Member Dec 2, 2008 1,289 0 36 Woodlands, Singapore www.kantaimages.com Aug 14, 2010 #4 Lens code determines the year of production..
