OK, let's clear this up. As da_nige says, these things like UT0308 aren't serial numbers, they're date codes.

All lenses have serial numbers (which on Canon lenses are 5- to 10-digit numeric), and in addition some have date codes. Up until about 1½-2 years ago all 'L' series lenses and some other lenses (TS-E and MP-E lenses, and Extenders) had date codes. However, new designs introduced since then have longer (10-digit) serial numbers and no date codes. So for example the EF 70-300mm f/4-5. Abs Tc-100 Thermal Printer Driver. 6 L IS USM and the 1.4x and 2x Mk III Extenders have 10-digit serial numbers but no date code.

How to determine age of a Canon lens. Posted on Feb 10, 2014. I have just purchased a CANON f8/500mm FD mirror Lens Serial number 19439.

The EF 70-200mm f/2.8 L IS II USM is an interesting and possibly unique case. Older examples have short (6-digit) serial numbers and date codes. Newer examples have long (10-digit) serial numbers and no date codes. The cut-over date was round May 2010. The structure of the newer 10-digit serial number suggests that there might be some sort of date encoding within them. I have several examples of the 70-200 f/2.8 IS II, and the serial numbers are: 69200xxxxx for 3 lenses bought in Oct 2010 72300xxxxx for a lens bought in Feb 2011 75600xxxxx for 3 lenses bought in May 2011 76600xxxxx for a lens bought in Jun 2011 77600xxxxx for 3 lenses bought in July 2011 78600xxxxx for 2 lenses bought in Oct 2011 It's suggestive but I've never seen anything documented to explain what's going on in there. Finally, no EF-S lenses have date codes, and (as far as I'm aware) no EF non-L lenses have date codes.

Hp Mediasmart Software For Windows 7 64-bit there. If you want to determine the age of an EF-S lens, the best way is to compare the serial number with other serial numbers. For example I have 17 EF-S 10-22mm lenses with serial numbers ranging from 27xxxxxx to 68xxxxxx, and I have 11 EF-S 17-55mm f/2.8 lenses with serial numbers ranging from 39xxxxxx to 76xxxxxx. If you have one of these lenses, I'd probably be able to date your lens to within a couple of months.

OK, let's clear this up. As da_nige says, these things like UT0308 aren't serial numbers, they're date codes.

All lenses have serial numbers (which on Canon lenses are 5- to 10-digit numeric), and in addition some have date codes. Up until about 1½-2 years ago all 'L' series lenses and some other lenses (TS-E and MP-E lenses, and Extenders) had date codes. However, new designs introduced since then have longer (10-digit) serial numbers and no date codes. So for example the EF 70-300mm f/4-5.6 L IS USM and the 1.4x and 2x Mk III Extenders have 10-digit serial numbers but no date code. The EF 70-200mm f/2.8 L IS II USM is an interesting and possibly unique case. Older examples have short (6-digit) serial numbers and date codes. Newer examples have long (10-digit) serial numbers and no date codes.

The cut-over date was round May 2010. The structure of the newer 10-digit serial number suggests that there might be some sort of date encoding within them. I have several examples of the 70-200 f/2.8 IS II, and the serial numbers are: 69200xxxxx for 3 lenses bought in Oct 2010 72300xxxxx for a lens bought in Feb 2011 75600xxxxx for 3 lenses bought in May 2011 76600xxxxx for a lens bought in Jun 2011 77600xxxxx for 3 lenses bought in July 2011 78600xxxxx for 2 lenses bought in Oct 2011 It's suggestive but I've never seen anything documented to explain what's going on in there. Finally, no EF-S lenses have date codes, and (as far as I'm aware) no EF non-L lenses have date codes. If you want to determine the age of an EF-S lens, the best way is to compare the serial number with other serial numbers.