RONKONKOMA, N.Y.–Sigma Corporation of America, a leading researcher, developer, manufacturer and service provider of some of the world’s most impressive lines of lenses, cameras and flashes, today announced a revolutionary new, fee-based service that will enable the company’s Global Vision lens owners to change their lens mounts for use on different camera systems.
Sigma Announces (Paid) Lens Conversion Service and Extends Warranty to Four Years

Now it is official. Sigma announced its new and revolutionary lens mount conversion service for any of their recent “Global Vision” lenses. They will charge from $80 to $250, depending by the lens. The following lenses are included in the service:

More information here, there is also a FAQ here, service policy details are here. At the same time Sigma announced they will give a four year warranty on all new products.
Sigma’s press release:
Sigma Corporation’s New Mount Conversion Service Enables Lens Use across Camera Systems
Manufacturer announces first-ever mount change option, as well as universal, four-year warranty for all products


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