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Archive 2012 · date codes
  
 
JesseShotland
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p.1 #1 · date codes


Can someone explain to me why date codes matter? and what the different date codes are?

Thanks!



Apr 07, 2012 at 05:47 PM
Gochugogi
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p.1 #2 · date codes


I only care about the condition of the lens and the date code is immaterial. However it is extremely important to some buyers as they believe lens are like produce and meat, so the fresher, the better. Many times I've seen a post here where somebody is worried about freshness as they just bought a new lens from a dealer with a date code 18 months out. It's also possible that certain production batches are better than others (e.g., early production had better QC than later) so a date code might help you sell the lens for a higher price. My last couple new lenses lack a date code so Canon seems to have stopped printing the code on the outside. Maybe it's in the ROM now.


Apr 07, 2012 at 05:57 PM
CW100
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p.1 #3 · date codes


I've also heard Canon is no longer putting date codes on new L lens



Apr 08, 2012 at 12:10 PM
RazorTM
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p.1 #4 · date codes


CW100 wrote:
I've also heard Canon is no longer putting date codes on new L lens


Good, I say



Apr 08, 2012 at 12:13 PM
gvg45
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p.1 #5 · date codes


CW100 wrote:
I've also heard Canon is no longer putting date codes on new L lens


Some lenses (70-200IS2) are not using date codes on the newer production runs, but date codes are still being used on L lenses such as the 24-105. 2012 will be UA.



Apr 08, 2012 at 02:02 PM
ChrisRD
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p.1 #6 · date codes


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


Apr 08, 2012 at 02:07 PM
Invertalon
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p.1 #7 · date codes


There is a date code on my kit 24-105L, UA. So they are still being used!



Apr 08, 2012 at 05:02 PM
Ben Horne
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p.1 #8 · date codes


It really doesn't matter.... but there are some people on the B&S forum sure make a big fuss about it.


Apr 08, 2012 at 06:27 PM
Gunzorro
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p.1 #9 · date codes


Date code makes a difference to me, in combination with the general condition and ownership history (when available). If I can buy a lens made last year vs. one made 10 years ago, I'll take the newest unless there is a compelling quality issue in favor of the earlier model. I stay away from lenses that are seriously out of date, like most EF lenses from the late 80s -- mid-90s is my cut-off for professional use.


Apr 08, 2012 at 06:35 PM
 

Search in Used Dept. 



Gochugogi
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p.1 #10 · date codes


I owned an EF 135 2.8 SF, 50 1.8, 35 2.8. 28 2.8 and 24 2.8 I bought new in the 80s and, amazingly, they were perfectly reliable to this very day. On the other hand, many of my newer tech optics suffered mechanical problems (alignment issues and burned out AF motors and IS units). Of course, zooms are more complicated than primes but still my experiences left me feeling QC was better back in the day.


Apr 08, 2012 at 07:10 PM
hanak347
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p.1 #11 · date codes


UT, UU, UV, UW, UX, UY, UZ, UA
2005, 06,07, 08, 09, 10, 11, 2012



Apr 08, 2012 at 07:56 PM
Imagemaster
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p.1 #12 · date codes


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, Japanfactory. 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, 1971
M = 1998, 1972
N = 1999, 1973
O = 2000, 1974
P = 2001, 1975
Q = 2002, 1976
R = 2003, 1977
S = 2004, 1978
T = 2005, 1979
U = 2006, 1980
V = 2007, 1981
W = 2008, 1982
X = 2009, 1983
Y = 2010, 1984
Z = 2011, 1985

* 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).



Apr 08, 2012 at 08:27 PM
big country
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p.1 #13 · date codes


they don't matter, there is this huge perception online that they do.

people think lenses are like cars, and quite frankly they are not.



Apr 08, 2012 at 08:43 PM
Gunzorro
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p.1 #14 · date codes


big country wrote:
they don't matter, there is this huge perception online that they do.

people think lenses are like cars, and quite frankly they are not.


This is true -- I can easily find parts for my '81 VW Vanagon -- new, used, or custom made -- and can have it worked on at practically any streetcorner mechanic, at very low cost.

Not so with old lenses.










Apr 08, 2012 at 09:37 PM
Agalma
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p.1 #15 · date codes


The only reason I have ever cared about date codes is because I know that a more recent code will help resale value. So when I buy used, I do favor more recent codes.

I've often wondered if Canon improves lens coatings over the years; and if they do, would they continue to put an old formula on new lenses just for the sake of consistency? I don't know the answer to that, but it's the only thing I can think of that might actually be different on a lens with a newer date code.



Apr 08, 2012 at 11:41 PM
big country
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p.1 #16 · date codes


the only reason why newer date codes help w/ receive value is the perception online.

i have owned a lot of lenses in the last 5 years and seen UN date codes that were in better shape than UW.





Apr 09, 2012 at 01:17 AM
Imagemaster
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p.1 #17 · date codes


big country wrote:
the only reason why newer date codes help w/ receive value is the perception online.


Which is a valid reason for buying the one with the newer date code when two lenses appear to be in similar condition.



Apr 09, 2012 at 01:38 AM





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