Sigma will convert the current mount of your Sigma Global Vision lens to another of your choice. Sigma lenses currently from the Contemporary, Art or Sports line, in Sigma, Canon, Nikon, Sony, Pentax mounts can be converted to Sigma, Canon, Nikon, Sony or Pentax*. Mirorrless lenses can be converted to Micro Four Thirds and Sony-E Mount. They cannot be converted to either an APS-C or a Full Frame format.

As of August, 2013, all Sigma Global Vision are eligible for this service.

*Subject to mount, parts and service availability. Not all products are available in Pentax and/or Sony Mounts. Please check the specific product page to check availability in those mounts.

The conversion service will be handled by Sigma in Japan so upon receipt, your lens will be sent to Japan to be converted to the desired mount and returned to Sigma America, who will, in turn, ship it directly to you. The anticipated turn-around time for this service is two - four weeks.

The pricing range for this service can be between $80 to $250.

Shipping and Handling can cost between $25 to $100.

This service is handled only by the original purchaser of lens. If your lens was purchased in the U.S.A., the Mount Conversion Service will be handled by Sigma America only. Other Authorized Sigma Service Centers will not handle this operation. Please send your lens(es) only to Sigma Corporation America by filling out the Online Mount Conversion Service Request Form and sending the product to:

Sigma Corporation of America
15 Fleetwood Court
Ronkonkoma, NY 11779