1. Serial Number Lookup Warranty
2. Serial Number Lookup Specs
3. Sigma Lens Date Code

I have a Canon EOS 85mm f/1.2 L II lens. I sold it to someone, they claim it was broken and sent it back. I am trying to prove that the lens I sent to them, is not the one they returned.

From http://regex.info/exif.cgi

My lens has a six digit number XXXXXX. How can I convert 0000020f30 or extract to get the 6 digit serial number?

The same cameras that can differentiate between two of the same model lens for AFMA purposes appear to be the ones that accurately report the 'Lens Serial Number' in the 'Maker Notes'. But the internal number may not be the same as the number stamped on the lens. Where can I do a search using a Sigma lens serial number? I want to check the details of the lens. I've tried Google but come up empty. Sigma Lens Serial Number.

2 Answers

I tried the Jeffrey's EXIF viewer with three images taken with the same camera (a Canon 50D) and three different lenses. The 'Internal Serial Number' value returned by Jeffrey's EXIF Viewer was the same value for all three images taken with the same camera and three different lenses. Each image was taken with, respectively, a Tamron SP AP 17-50mm f/2.8 XR Di-II, an EF 70-200mm f/2.8 L IS II, and an EF 28-135mm f/3.5-5.6 IS. The two Canon lenses were correctly identified in the 'Lens Model' field (The Tamron was identified as a 'Canon EF 28-70mm f/2.8L or Sigma or Tamron Lens' because many Tamron and Sigma lenses are known to spoof the lens ID for the older EF 28-70mm f/2.8L). This leads me to believe the 'Internal Serial Number' value is a reference to the camera body, not the lens (at least on older Canon bodies that do not differentiate between two different copies of the same lens model for various purposes such as AFMA). Even though the the lens ID immediately precedes the 'Internal Serial Number' value, it may not accurately reflect the serial number of the lens used to create the image. Images taken with my 7D using two different lenses shared the same 'Internal Serial Number' with each other, a different number than the three images taken with three lenses using the 50D shared. Images taken with my 5D mark II have a blank 'Internal Serial Number' value when using Jeffrey's EXIF Viewer.

Many Canon camera bodies have a separate internal serial number that doesn't match the one stamped on the exterior of the camera, at least not when the number in the EXIF is translated using a standard hex to decimal converter. This may also be the case regarding lens ID numbers with bodies that can differentiate between two different copies of the same model lens.

• That may mean a much 'later' lens. EXIF information can already record the lens serial number if the lens info is passed to the camera body, which isn't the case except in recent lenses, and even then a Canon lens on a Canon body. A Sigma lens might not ever pass the necessary info to the body.
• For each version up to four serial numbers are given: Start - Earliest - Latest - End. Start and End serial numbers are from Nikon Ai conversion lists, service manuals, catalogues and various books. The Earliest and Latest serial numbers are from lenses I have seen.
• I'm not sure exactly what the problem is if the lens is OK? I think you'll be lucky to make any sense of Pentax serial numbers though. Manufacturers may mix up the numbers to avoid giving away the numbers of production runs. A few manufacturers in the past have been fairly rigorous in keeping track, but not Pentax.
• Minolta produced an extensive array of lenses for the manual focus SLR system, and thankfully, given the lens mount remained the same throughout the. Nikon Lens Versions and Serial Nos Lens Serial Nos Part Number: APGDT001 - LIN Serial Analyzer.

Serial Number Lookup Warranty

The value for 'Camera Serial Number' in the EXIF maker notes of images taken with my Canon 50D is 5AA411141. Using a standard converter yields a decimal value of 24331227457. Yet the Serial number stamped on the camera body is 1520708485. This number is correctly reported by Digital Photo Professional as the camera's serial number. Irfanview reports the serial number as '1520708485 (5AA411141)'. Hmmm. The HEX number that correlates to the stamped serial number 1520708485 is '5AA42B85'. The first four digits match, but the rest doesn't? This is very interesting, though, because (HEX) 2B85 = (Decimal) 11141! Thus it seems the internal number in the EXIF information is a combination of hex and decimal digits! A four digit hex number (in my case '5AA4') followed by the decimal equivalent of the rest of the hex form of the entire serial number (in my case 11141 which is the decimal equivalent of 2B85)!

The Value for my 7D and 5D II work exactly the same way. Star trek armada 2 full game download. If I convert the camera's serial number to Hex, then convert the last four hex digits back to decimal, I get the same value that the maker notes show for the camera serial number: The first four digits of the 8-digit hex number followed by the decimal equivalent of the last four digits of the 8-digit hex number.

Although it doesn't help your situation, the best practice when selling a lens anywhere near the value of an EF 85mm f/1.2 L would be to document the serial number of the lens and the condition it is in before you ship it.

This number looks like a hexadecimal number. If you put it into a convertor such as this one it will give you a decimal number - in this case 134960. The conversion may or may not be as simple as this but this does give a 6 digit number.

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The Sigma APO 150-500mm F5-6.3 DG OS HSM lens is a super-telephoto lens produced by Sigma Corporation. It contains three SLD (Special Low Dispersion) glass elements to provide correction for chromatic aberration. It is aimed toward advanced consumer level photographers, and is available in Nikon, Canon, Pentax and Sigma camera mounts.

Technical information[edit]

The optical construction consists of 21 lens elements divided into 15 groups. The 9-bladed diaphragm begins at f/5 when shooting wide open, progressing towards f/6.3 at 500mm. As expected with similar long telephoto zoom lenses, optical quality drops off at the extremes of the telephoto range.

Autofocus is achieved using a moderately fast hypersonic motor for quiet operation. Additionally, all focus elements are internal so in operation the front element does not rotate or extend during focusing, which is useful when a polarizing filter is employed.

Serial Number Lookup Specs

Recall[edit]

In 2010, Sigma recalled some lenses due to a 'potential autofocus defect'. Sigma offered customers a modification service, free of charge. Lenses requiring the modification were those with serial numbers between 10674301 and 10972000. Sigma lenses APO 50-500mm F4.5-6.3 DG OS HSM and APO 120-400mm F4.5-5.6 DG OS HSM were also affected.^[2]

See also[edit]

References[edit]

1. ^APO 150-500mm F5-6.3 DG OS HSM/APO 150-500mm F5-6.3 DG HSM
2. ^http://www.dpreview.com/news/2010/6/16/sigmatelephotonotice

External links[edit]

Sigma Lens Date Code