The DD is the key to the date of manufacture of the lens – the date code. Look at the contacts (or lack of), the pins, the size of the mount, the grooves, indentations, tabs, mounting dots, screw placements, serial number locations, rear elements, etc. Hi folks, Can someone tell me how can I decode the serial number to production year for my new sigma lens ? Every mount is different- you just have to pay attention to the small details to determine what is what. This database contains an ever-evolving listing of serial numbers for every kind of Pentax photographic item, including cameras, lenses, and accessories. Having put it in to the claim form, including the lens model from the drop-down list, it worked fine. The reported incident serial number are starting in the range 384xxxxx~387xxxxx.'' Serial Number Chart for Acoustic and Classical Guitars In the following charts, you can determine the year of manufacture for a Yamaha acoustic or classical guitar. Als je het serienummer van een lens wilt controleren die onderdeel was van een kit, selecteer je de modelnaam van de camera uit de kit in onderstaande lijst met modellen.

A bit below you can read a list of the affected lenses.

The zoom is certainly right there with the two Canon primes. To see if your lens is affected type your serial number in the box below, and then click the Check Serial button.

Sigma serial numbers lens