Canon鏡頭年份解謎

      大家買賣二手器材時，總是會寫一些編號出來。而這些編號就透露了鏡頭的年齡。
爬了一下文章找到這一篇 The Digital Picture.com Canon Lens Aging - How Old Is That Lens?

大意是說，若是二個英文字開頭的，第一碼代表製造工廠
U = Utsunomiya, Japan
F = Fukushima, Japan
O = Oita, Japan

第二碼代表年份：

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

有興趣知道更詳細的內容就爬原文吧！

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