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CANONROB
Thursday 10th November 2005, 11:10
I hope this helps those that don't know how to check what Month/Year the Lens that you buy Second Hand from EBay, or other places is what they say it is, you can ask them before you spend your hard earned cash what the code is, and then check it is correct, you should find this very useful, I do!.

Canon Lens Aging - How Old Is That Lens?

Beside the rear lens element of many (but not all) Canon lenses is a date code (as seen above) in the form of "UR0902". This code is also present on many other Canon products including camera bodies.

The first letter, "U", indicates that the lens was made in Canon's Utsunomiya, Japan factory. Prior to 1986, this letter is moved to the last position of the date code.

U = Utsunomiya, Japan
F = Fukushima, Japan
O = Oita, Japan

The second letter, "R", is a year code that indicates the year of manufacture. Canon increments this letter each year starting with A in 1986 and prior to that, A in 1960 without the leading factory code. Here is a table to make things simple:

A = 1986, 1960
B = 1987, 1961
C = 1988, 1962
D = 1989, 1963
E = 1990, 1964
F = 1991, 1965
G = 1992, 1966
H = 1993, 1967
I = 1994, 1968
J = 1995, 1969
K = 1996, 1970
L = 1997, 1972
M = 1998, 1973
N = 1999, 1974
O = 2000, 1975
P = 2001, 1976
Q = 2002, 1977
R = 2003, 1978
S = 2004, 1979
T = 2005, 1980
U = 2006, 1981
V = 2007, 1982
W = 2008, 1983
X = 2009, 1984
Y = 2010, 1985
Z = 2011, 1986

* assumption of continuation being made for future years.

The first two numbers, "09", is the month number the lens was manufactured in. Month 02 is February, month 11 = November. The leading zero of the month code is sometimes omitted.

The next two numbers, "02", are meaningless in determining how old a Canon lens is. This is a Canon internal code (that is occasionally omitted).

You now know the manufacture date for your lens - But - You cannot know how long the lens was in inventory, in shipping transit and on a shelf until it was originally purchased (without having the original receipt or a reputable person accurately informing you).

I hope this helps you.

Regards Rob

compa
Thursday 10th November 2005, 16:58
I like this kind of information - most of the time it is useless - but I like it anyway!

Just checked all of my Canon glass and only two out of 5 had the date codes. Those were a 1.4x teleconverter and the 300mm f/4 IS. Couldn't check my 100-400mm since it is in the shop for some 'adjustments'.

Maybe it's only the white glass that they date code.

postcardcv
Thursday 10th November 2005, 17:36
potenially useful info - thanks.

I found the factory codes pleasing - U F O

Perhaps all the comments about the 500mm f4 IS being 'out of this world' are truer than we thought ;)

hummerman
Friday 11th November 2005, 00:15
potenially useful info - thanks.

I found the factory codes pleasing - U F O

Perhaps all the comments about the 500mm f4 IS being 'out of this world' are truer than we thought ;)







Cheers for that info,at least i know my 400 DO date of manufacture.

Martin :cool: