Sigma Announces Conversion Service for Switching Lenses Between Mounts


The rumor was true — kinda. Sigma today announced a new Mount Conversion Service for its Global Vision line of lenses that will allow photographers to convert their lens lineups to different mounts if they ever decide to change camera brands (e.g. Canon to Nikon and vice versa).

Unlike what was previously rumored, it’s not a free service: the conversion will cost you a pretty penny — just not as much as you’d pay to buy a new copy of the lens.

Sigma says the first-ever service will be offered for both existing (currently seven) and future Global Vision lenses, which come in Art, Sport, and Contemporary varieties.


Photographers will have their choice of a Sigma, Sony, Pentax, Nikon, or Canon mount. Have a mirrorless Sigma lens? You’ll be able to choose between a Micro Four Thirds mount of Sony’s E mount. Any mount is available, as long as your lens can already be purchased in that mount.

All lenses will be converted, calibrated, and optimized at Sigma’s factory in Aizu, Japan after the lens is shipped to the customer’s national Sigma branch.

You’ll be able to convert your lenses starting September 2nd, 2013 for a fee ranging from $80 to $250, not including shipping costs. Price will depend on the focal length of your lens.

P.S. Sigma is also introducing a 4 year warranty on all new products purchased on or after July 1st, 2013. Converted lenses will carry a six month warranty.

  • cunguez

    Very, very smart, for a host of reasons. I’m hoping there aren’t too many people who jump in here and harp on the fact that the element of the rumor that this would be a free service didn’t come to fruition ( that bit always seemed unlikely).

    They really are on a roll, and something I hope really DOES materialize is the rumored 24-70mm f/2! Certainly seems plausible given their recent efforts.

  • junyo

    I liked this idea the first time I saw it… When Tamron did it, and it was called Adaptall.

    I kid, I kid.

    I think this is the kind of thing where 3rd party lens makers really add value. I’d rather buy a lens that can migrate with me if I need/want to change systems than sinking unrecoverable costs into a specific mount – assuming similiar quality/performance.

  • Fuzztographer

    If you think about it, this is priced extremely well. It’s roughly the same, or quite a bit lower depending on the particular lens, then than the difference between the purchase price of a new lens and the sale price of your old one.

    But now I can just tell Sigma to take care of it and not deal the hassle and ambiguity of a sale? Sign me up!

  • radiancedeluxe

    cool, but not worthy of a special polish website countdown. just sayin.

  • Mark Dub

    I think a universal mount would have called for the hyped up countdown.. but def not this.

  • tarena1991

    this would have been nice 7 years ago when i had a Pentax…then 4 years ago when i switched to Canon…then 2 years ago when i switched to Nikon…i think i’m done now…

  • Steven Wade

    Because that’s possible.

  • Jeff

    ” P.S. Sigma is also introducing a 4 year warranty on all new products purchased on or after July 1st, 2013″
    So .. if i got the 35 1.4 since april 2013 no 4 years warranty for me ? … ok … sorry for trusting sigma and buying this lens.

  • Banan Tarr

    I am sure that the 35mm 1.4 (I have one too) will last at least 4 years anyway. You have nothing to worry about.

  • Anthony

    “sorry for trusting sigma and buying this lens.” Huh? Because you didn’t get a freebee like some other people? Let’s all feel sorry for Jeff and his amazing piece of technology that provides him beautiful crisp pictures but unfortunately doesn’t have a 4 year warranty that he didn’t even expect anyways when he purchased the lens.

  • Mark Dub

    I never said it was possible. I was stating something that would have matched the hype.. realistic or not.

  • Derek Miles Forrest Talbot

    I bought in 1986, a Tamron 70-210mm with Nikon mount, and I still use it on my Nikon D60, in manual mode, the Question is why, does Sigma need to adjust it to each camera make?,

  • Chung Dha

    I wonder if this mount change is only for new lenses, cause I so want to get my old lenses rechipped which they said they stopped doing for really old lenses. Cause got some wonderfull sharp glasses a 28-70mm f2.8 and 14mm f3.5 but the chip is too old to use on new cameras or atleast hop that they chip unit thing could update the firmware.

  • John So

    As long as it does cost more than the lost you make by selling your lens second hand, it is rather meaningless.