This was undoubtedly covered before but.....
Can someone tell me the datecode scheme for newer EOS lenses? FD lenses
and some of the first EF lenses (such as my Type I 50/1.8) had the
datecode stamped in white ink on the back. Z=85, A=86, B=87, etc. My
newer lenses just have a long, faintly engraved serial number which ends
with a letter on the back. My 85/1.8 = 3300165E. Does the letter have
the same designation, ie, E=90? This seems quite old. Also, what about
the month?
Can anyone assist me?
Thanks,
John Lovda
Canton, OH
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