Mount Converter MC-11

Sigma Quality Meets Sony Capabilities
Accessories, Mount Converter
  • Adapt Sigma Canon Mount or Sigma mount to Sony FE system
  • As new compatible lenses are released, control data from MC-11 is updatable via personal computer
  • Accessories Included: Front and Rear cap
Price: $249.00

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Price: $249.00
*Authorized dealer prices may vary

Notice to current users or potential purchasers of the MC-11 Mount Converter


19 interchangeable Sigma lenses available for Sony E-mount camera bodies

Camera Converter Lens     
Sensor Size Sigma Lens

a7 series
NEX series
a5000 series

MC-11 35mm (Full Size sensor) 24-35mm F2 DG HSM | Art
24-105mm F4 DG OS HSM | Art
120-300mm F2.8 DG OS HSM | Sports
150-600mm F5-6.3 DG OS HSM | Sports
150-600mm F5-6.3 DG OS HSM | Contemporary
20mm F1.4 DG HSM | Art
24mm F1.4 DG HSM | Art
35mm F1.4 DG HSM | Art
35mm F1.4 DG HSM | Art
50mm F1.4 DG HSM | Art
APS-C 17-70mm F2.8-4 DC Macro OS HSM | Contemporary
18-35mm F1.8 DC HSM | Art
18-200mm F3.5-6.3 DC MAcro OS HSM | Contemporary
18-300mm F3.5-6.3 DC MAcro OS HSM | Contemporary
50-100mm F1.8 DC HSM | Art
30mm F1.4 DC HSM | Art
Not required 19mm F2.8 DN HSM | Art
30mm F2.8 DN HSM | Art
60mm F2.8 DN HSM | Art
30mm F1.4 DC DN | Contemporary


When used with a camera body that is compatible with Fast Hybrid AF, AF-S mode the MC-11 delivers extremely fast and smooth autofocus performance. With other camera bodies, contrast detection AF it offers very high-precision autofocusing.  Click for full technical information.


The Sigma MC-11 Converter is a revolutionary product designed to allow compatibility between Sony E-Mount Full frame and APS-C cameras and Sigma Canon EOS mount and Sigma mount lenses. Utilizing the latest technology, the MC-11 supports fast and accurate autofocus and will work in conjunction with in-camera stabilization and in-lens stabilization. An LED display on the adapter shows the user if their lens is compatible and the MC-11 is also updatable with Sigma’s USB docking station. Flocking inside of the converter allows the image to be maintained while the internal electronics record all data from the image for later review. Functions such as Eye Detection and Continuous Autofocus are supported through the MC-11. Like all Sigma Global Vision products, each converter is hand crafted in our single factory in Aizu Japan, individually inspected before shipping and offers a 4 year USA warranty.


Tech Specs
 Light  O   Green light  The lens is compatible.
 Blinking green light  The lens requires a firmware update with the USB Dock.
 Blinking orange light  The MC-11 requires an update to read new lens data.
 No Light  X  The lens is not compatible.
Ratings & Reviews
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Customer Reviews. 5 review(s)

Review by jonte
Posted on 5/2/2016
Good but no cigar
Really nice adapter for the price but as today 2 may 2015 this adapter don't work as good as the metabones on canon native lenses, bur hopefully sigma vill fix this in firmware. No tripod mount.

Review by Hifi
Posted on 4/30/2016
Doesn't work with the 50-100. Works with the 18-35.
This adaptor works very well with the 18-35 ART.
Unfortunately it's as worse as metabones with my 50-100 ART received this morning. I can't find a way to download new firmwares.
Review by Pyriphlegethon
Posted on 4/27/2016
Worse than expected
I had high hopes for this adapter. I'm looking for a firmware update to resolve things, but if it doesn't get any better I might end up sending this back. My biggest issue is that the thing doesn't even work well with the Sigma 18–35 f1.8. With the camera in AF-S, the lens frequently and randomly goes completely out of focus without any action on the user's part. Phase detect AF seems slower generally, especially in low light, and even more so in video mode where from my brief testing it looks to be unusable. Eye-AF is enabled but doesn't seem to work nearly as reliably as other Sony lenses. Put a Sony lens on after using the MC-11 and 18–35 combo and you'll realize a massive difference. Other grievances include: No 1/4 20 thread on the bottom for mounting (Metabones has it). This becomes crucial with lenses like Sigma's 18–35 f1.8 which puts all the camera's weight at the front. The inability to accept Canon EF-S lenses is another big one. While it's not fair to criticize Sigma for lack of support on something they never claimed to support, lots of info from the web is trickling in on Canon (rather than solely Sigma Canon mount) lens compatibility. The fact that you can't even put an EF-S lens on the thing (at least not the Canon 10–18) is discouraging. I truly hope firmware fixes are in the works for this, or available now, as I've seen more positive comments from other reviewers. I sold my a7rii so I'm wondering if these issues are more exclusive to the a6300.
I don't know why Sigma's rating criteria includes both value and price as I would consider "value" one of the variables incorporating price, but the reason I'm giving this three stars still is that it's only a $250 adapter verses something from Metabones. I'm finding the Metabones to be much more reliable and a much better thought out adapter so far however as the Sony-specific feature set enabled by this adapter does not perform reliably.
Review by HEK
Posted on 3/8/2016
canon Lenses
Does the MC-11 mount also take Canon lenses?
Review by matze
Posted on 2/23/2016
What's about older lenses?
Only 19 Sigma lenses? Is there any Aperture compatibility available for older Sigma lenses?