![]() ![]() There also seems to be at least some cases where the same external serial numbers have been used for two different lenses in two different model lines. LIGHTROOM 4 SERIAL NUMBERS SERIAL NUMBERS Please note that the actual date of manufacture of the lens does not seem to affect whether the lens provides an internal serial number or not. It appears to be when that lens model was introduced. It does not report a serial number to the camera. It does provide an lens serial number to the camera. The first Canon bodies that offered user accessible AFMA were the EOS 1D Mark III and EOS 1Ds Mark III, both introduced in 2007.All of my other lenses that are models introduced prior to 2003 do not report an internal serial number, even if my copy of the lens was made as recently as 2016.I reports a lens serial number to the camera. LIGHTROOM 4 SERIAL NUMBERS SERIAL NUMBERĬanon appears to have started including the "internal" serial number in lenses sometime around 2004-2005 before introducing the camera bodies that could use the information in 2007.¹ As has been the case several other times, Canon started "silently" making half of a system with compatibility for a feature to be introduced in the other half a couple of years later. ![]() ¹ Another classic example: Canon bodies introduced from about mid-1993 had the ability to control Canon EF lenses with IS. No one, other than those on the inside at Canon, had a clue the bodies they already owned included this ability until the first IS lens was introduced in 1995 and Canon released a list of existing models that already had compatibility with IS built in.
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