Mount Conversion Service

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, the following lenses are eligible for this service:

  • Interchangeable lense for SLR/DSLR cameras:
    • 35mm F1.4 DG HSM | Art
    • 120-300mm F2.8 DG OS HSM | Sports
    • 30mm F1.4 DC HSM | Art
    • 17-70mm F2.8-4 DC Macro OS HSM | Contemporary
    • 18-35mm F1.8 DC HSM | Art
  • Interchangeable lenses for Mirrorless Cameras:
    • 19mm F2.8 DN ART
    • 30mm F2.8 DN ART
    • 60mm F2.8 DN ART

*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 is as follows:

Level 1 – DN Art Lenses  - $80.00
Level 2 – Standard Lenses: 35mm F1.4 DG HSM | A, 30mm F1. DC HSM | A, 17-70mm F2.8-4 DC Macro OS HSM | C, 18-35mm F1.4 DC|A - $150.00
Level 3 – Super Telephoto lenses: 120-200mm F2.8 DG OS HSM | S - $250.00

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:

15 Sigma Corporation of America
Fleetwood Court
Ronkonkoma, NY 11779

Authorized Service Centers | Online Mount Conversion Service Request Form