Sigma US announces Mount Conversion Service for recent lenses


Sigma has announced a ‘Mount Conversion Service’ for any of its recent ‘Global Vision’ lenses – a paid-for service designed to reduce the uncertainty of changing camera systems. The company says it will charge between $80 and $250, plus shipping costs, depending on the specific lens. The Global Vision range currently includes seven lenses – from the huge 120-300mm F2.8 DG OS Sport for full-frame DSLRs, down to the 19mm F2.8 DN Art for Micro Four Thirds. The company has also extended the warranties on all new products to four years.

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

RONKONKOMA, N.Y., — Aug. 1, 2013Sigma 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.

Starting Sept. 2, Global Vision lens owners can request the Mount Conversion Service to convert their current Sport, Contemporary or Art DSLR lenses to their choice of a Sigma, Sony, Pentax, Nikon or Canon mount. Global Vision category lenses for mirrorless interchangeable lens cameras (MILCs) can be updated to either a micro four thirds (MFT) or Sony E- mount.

In addition to the announcement of the industry’s first Mount Conversion Service, Sigma is also extending the warranty on all of its products – including cameras, lenses and flashes purchased on or after July 1, 2013 – to four years. Previously, warranties varied by product. This enhanced product protection provides Sigma’s customers with more consistency and improved service.

“Professionals and amateurs alike are taking advantage of the many affordable camera options in today’s market; they’re updating their camera bags and exploring new systems and brands,” said Mark Amir-Hamzeh, president of Sigma Corporation of America. “When photographers purchase a lens, it’s often a significant, financial and artistic commitment – and we believe that investment should last a lifetime. Our new Mount Conversion Service and extended warranty are intended to help Sigma users get more enjoyment from our products, regardless of how their approach to photography changes overtime.”

The Mount Conversion Service is limited to all of Sigma’s Global Vision lenses. Current, applicable full-frame lenses include the 120-300mm F2.8 DG OS Sport and 35mm F1.4 DG Art; APS-C crop sensor lenses include the 30mm F1.4 DC HSM Art, 17-70mm F2.8-4 DC OS Macro Contemporary and 18-35mm F1.8 DC Art; and MILC lenses include the 19mm F2.8 DN Art, 30mm F2.8 DN Art and 60mm F2.8 DN Art. Lenses can be converted to any mount of a photographer’s choosing, as long as Sigma has released that product in the requested mount.

Cost of the conversion will range between $80 to $250, plus shipping costs, depending on the focal length of the lens. All lenses will be shipped to Sigma’s US subsidiary in New York, and updated, calibrated and optimized for the new camera system at Sigma’s factory in Aizu, Japan. All lenses that undergo the Mount Conversion Service will be covered under warranty for six months following the update. Teleconverters, USB Docks and other accessories are not eligible for the service.

To request the Mount Conversion Service, please visit your local Sigma subsidiary. Customers in the United States should visit


barry reid

It’s gonna cost a lot more to get the 19/30/60 lenses converted than to ebay them and buy a new one!

DotCom Editor

Wow, a “120-30mm” lens? Really?


The article is fuzzy regarding the 4-year warranty. Does this only apply going forward? What about those who have already purchased the lens?


Does it mean we can get the K mount with lenses produced only for EF, F, and SA? It’s not clear, why Sigma don’t produce 120-300mm for Pentax or Sony if it can change a mount of this lens? Or some restrictions nevertheless are there?




It seems that some restrictoins are applied. Sigma USA site claims:

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.

I suppose, it means that they cannot attach the K or A mount to 120-300mm lens. Unfortunately.


It says “as long as Sigma has released that product in the requested mount.”

Rick Knepper

Overall, a good idea but the pricing needs work. A better idea would be an “interchangeable” mounting system that could be changed by the consumer like Zeiss is doing this now with their Compact CP.2 lens except maybe better.

Jonathan F/2

I think this service is great. Yes it cost money, but at least the option is there.

Mikhail Tal

There’s no way it would cost you close to $80 to sell your used lens and buy another (used or possibly even new) lens in a different mount for their cheap prime lenses. And for some they will charge more than $80. This whole service is a ripoff.


whaaaat. to sell used pro glass and buy another lens your liable to lose more than that


A question pops up … If they can change the mount on, say, my 24-70/2.8 Sigma lens from Canon’s EF to Nikon F mount and keep the focusing, does that mean they can change the mount on the Canon’s L version of the same lens to the Nikon F mount?

If it can be done on Sigma lenses, can it be done on Nikkors and Canons?
What about flange distance?


no very unlikley they could. these new lenses were built with this in mind. with all there electronics in the back near the mount. canon wont have designed to be switched to nikon. sigma isnt even offering to do this to there own lenses except the ones they made after they already planned to offer this service


This seems pointless. At the price they quoted it should almost always be cheaper to just sell the version you own and buy a used copy of the version you want.

Besides, what I got from the article above is that if your lens has like 2 years left of warranty and you send it in for conversion, that 2-year warranty becomes 6-month. So that is another limitation.

Mikhail Tal

What they really should do is charge a max of 10% of the lens’s retail price, and as long as your lens is in mint condition, give you a brand new lens in the mount of your choice while they refurbish the one you sent in, that way no mount changing is required and at least you get a decent value.


for that to make any kind of business sense theyd need to be able to sell the refurbished lens for more than they sell the new lenses for. why on earth would they do this. why when a company offers a good service do people get upset it is not some pie in the sky thing that could never happen


I see that Sigma is having more proximity with the client desire, which is good. Joining the quality of their latest products in lenses that is producing lately. Such as the Sigma 18-35mm F1.8 and and probably 24-70mm f / 2 OS HSM next year, is the way to go.
Can not compensate for “cheap” lenses, but it is up to the customer to decide. Lens of average or high price, this mount conversion service will compensate the investment for sure.


Changing mount must be at a fixed price no matter what lens. It is kinda obvious because only mount is changed, not other part of the lens.

Ken Phillips

How wrong can you be!? You believe that the lens electronics that are “talking” to the camera are the same on Nikon, Canon, Sigma, etc.? Think again …


Soooo….30mm 1.4 for NEX/X/M/NX mounts???? With AF?? How does that exactly work?

Andy Westlake

“Lenses can be converted to any mount of a photographer’s choosing, as long as Sigma has released that product in the requested mount.”


Well i got that part. But will it still support AF? But that also just may mean that DSLR lenses may not be released in the mirrorless mounts.

Im missing the big point of this…

To me this seems…pointless at this point in time.

The 4 years soulnds good of coarse….

Good for pentax/ a mount users users i guess…

BTW wheres the GX7 annoucement? preorders are up for it…

Mikhail Tal

The point is they’re terrified of not seeling m4/3 lenses because some idiot bloggers are predicting it will die in a few years or some nonsense like that.


@Mikhail Tal
Well thats a good point you make there! I didnt think of that.

I do think the GX7 is very nice though.

Mikhail Tal

So they are going to charge $80 to change the mount on a $100-200 lens. LOL good luck with that.

Dave Luttmann

$80 is cheaper than $200. Good luck with your math lessons.

Mikhail Tal

I’ll tell you what, you send me your 19mm f/2.8 or 30mm f/2.8 Sigma lens, I will charge you $80 and send you the same version of that lens in the mount of your choice in equal or better condition as the lens you send in, with as many lenses as you want, I will have a sizable profit margin and I won’t even have to change the mount. Then we’ll see whose math is better.


For someone who switches systems, it beats selling and buying the same lens in another mount – especially if that copy is a very good one. It’s a win win situation, user gets to transfer the lens to a new system, Sigma generate income.


Well ..its might not be a big thing to Canikon users ..lenses with those mounts are super-easy to sell and buy …but … its actually very diffcult to find a second hand Sigma SA lens …and even harder to sell one…
I think Sigma is mainly offering this service in order to get more users to try the SD-1M and future models .. many posters in the Sigma -camera forum have boiled it down … like this : ” If only I clould use my Nikon / Canon -mont lenses on it , I would buy a Sigma camera in a heartbeat … now they can ..sort of 🙂


Sigma is going right way. New superb lenses, very nice merrill cameras, these services and 4 years warranty. +1 Sigma.

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