• Fringer adapter for Sony E mount

    Hi! I'm Fringer who developed Contax N/645 - Sony E smart adapters.

  • Features of Contax N/645 - Sony E auto adapter

    Fully utilize your beautiful Zeiss lens on latest digital camera bodies, just like a native one.


    Phase detection auto focus is supported*. AF performance is close to SLRs.

    *On A7rIII, A7III, A9, A7II, A7rII, A6300, A6500

    Electronic aperture control

    Fringer adapter fully understands Contax N and Sony E mount protocols and control lens' built-in aperture blades smoothly.

    Lens info (Exif)


    - Lens model, focal length, aperture, etc.

    reported in realtime.

    - Automatically supports 5-Axis SteadyShot (IBIS) !


    Field upgradeable

    Built-in USB port



  • More information

    For your reference.

    The development info, users' feedbacks, etc. (Chinese only)

    Fringer Contax N/645 - E adapter Mk3 User's Manual

    Fringer Contax 645 - E adapter User's Manual

  • Services and Firmware for E mount adapters

    After-sale services

    14-days return or replacement

    Within two weeks after you purchased the adapter, if it works abnormal or not as described, you may return it to us and get refund* or a new replacement. Please contact us before you return it.

     1-year warranty.

    Within one year after you purchased the adapter, if you encounter any problem, you may send it back to us for repair. If it's not caused by abnormal usage, we'll repair it for free.

    Lifetime service.

    You can always rely on our after-sale service, even after the free warranty period. But you may need to pay for relevant costs.


    * PayPal fee will not be refunded. Check this for more details.

    Firmware update

    So far, the latest firmware version is v.31 which is shipped with your adapter.

  • CN-SE adapter Compatible list

    Lens and Cameras

    Contax N lens supported

    - Makro-Sonnar T* 2.8/100

    - Planar T* 1.4/50

    - Planar T* 1.4/85

    - Tele-Apotessar T* 4/400

    - Vario-Sonnar T* 2.8/17-35

    - Vario-Sonnar T* 3.5-4.5/24-85

    - Vario-Sonnar T* 3.5-4.5/70-200

    - Vario-Sonnar T* 3.5-5.6/28-80

    - Vario-Sonnar T* 4.0-5.6/70-300

    Contax 645 lens supported

    - Apo-Makro-Planar T* 4/120

    - Distagon T* 2,8/45

    - Distagon T* 3,5/35

    - Distagon T* 3,5/55

    - Planar T* 2/80

    - Sonnar T* 2,8/140

    - Sonnar T* 4/210

    - Tele-Apotessar T* 4/350

    - Vario-Sonnar T* 4,5/45-90

    - Sonnar T* 2,8/140 + Mutar 1,4x T*

    - Sonnar T* 4/210 + Mutar 1,4x T*

    - Tele-Apotessar T* 4/350 + Mutar 1,4x T*

    Camera bodies supported


    PDAF supported

    - A9, A7rIII, A7III, A7rII, A7II, A6300 and A6500


    Contrast AF only

    - other E mount bodies, like Nex6, Nex7, A6000, A7, A7r, A7s, A7sII, etc.


    AF not available

    - old bodies like Nex5, Nex3 and NexC3.

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