Lens Accessories

EF-E II Booster Speed Lens Adapter For Canon EF Lenses To Sony E-Mount

The Viltrox EF-E II Booster Speed lens adapter mounts Canon EF full-frame lenses on Sony cameras with an E-mount. With 0.71x magnification, it concentrates the lens’s light onto the APS-C sensor,...

The Viltrox EF-E II Booster Speed lens adapter mounts Canon EF full-frame lenses on Sony cameras with an E-mount. With 0.71x magnification, it concentrates the lens’s light onto the APS-C sensor, reducing the crop factor and adding one stop of light compared with the lens’s maximum aperture.

It supports electronic communication with compatible lenses,...

See Description & Specifications See Description & Specifications
139 00 €
Delivery by Mon, 09 Nov
14,00 €   shipping cost
Sent from Greece
From Adophoto 5.0 (55)

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Reviews (1)

Reviews

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  2. 4 stars
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  3. 3 stars
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  4. 2 stars
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  5. 1
Review this product
  • kostasaggouras
    1
    6 out of 8 members found this review helpful

    In sony a6400 tested with yongnuo 50mm f1.8, Tamron 17-50 f2.8, and Tamron 70-200 f2.8. With the yongnuo, it does not recognize the aperture and permanently shows f/4 no matter what you do. Also, at some point, when you open the aperture from the camera, it makes a "bang" sound and fully opens the aperture, resulting in an overexposed image. Additionally, the autofocus does not always work, and even when it does, it never manages to "lock" onto the subject and stay focused. It constantly hunts for focus. With the Tamron lenses, it correctly displays the f-stop, going from 2.8 to 2, and indeed makes the lenses faster. However, the autofocus still has the same issues, whether in phase detection or contrast detection mode. I have tested it with all available firmware updates, and none of the problems were resolved. I discourage anyone considering purchasing it. It is the most wasted 150 euros I have ever spent in my life. Stay away.

    Translated from Greek ·
    Did you find this review helpful?
  • In sony a6400 tested with yongnuo 50mm f1.8, Tamron 17-50 f2.8, and Tamron 70-200 f2.8. With the yongnuo, it does not recognize the aperture and permanently shows f/4 no matter what you do. Also, at some point, when you open the aperture from the camera, it makes a "bang" sound and fully opens the aperture, resulting in an overexposed image. Additionally, the autofocus does not always work, and even when it does, it never manages to "lock" onto the subject and stay focused. It constantly hunts for focus. With the Tamron lenses, it correctly displays the f-stop, going from 2.8 to 2, and indeed makes the lenses faster. However, the autofocus still has the same issues, whether in phase detection or contrast detection mode. I have tested it with all available firmware updates, and none of the problems were resolved. I discourage anyone considering purchasing it. It is the most wasted 150 euros I have ever spent in my life. Stay away.

    Translated from Greek ·
    6
  • See all

Description & Specifications

The Viltrox EF-E II Booster Speed lens adapter mounts Canon EF full-frame lenses on Sony cameras with an E-mount. With 0.71x magnification, it concentrates the lens’s light onto the APS-C sensor, reducing the crop factor and adding one stop of light compared with the lens’s maximum aperture.

It supports electronic communication with compatible lenses, enabling autofocus, in-camera aperture control, and Exif data recording when these features are supported by the lens and camera. The side switch selects phase-detection or contrast-detection autofocus; select the mode before mounting the adapter on the camera. The detachable tripod foot has a 1/4″-20 thread, while the micro-USB port allows firmware updates.

  • Type: Lens adapter with booster
  • Lens compatibility: Canon EF full-frame
  • Mount compatibility: Sony E-mount
  • Magnification: 0.71x
  • Light gain: 1 stop
  • Optical construction: 4 elements in 4 groups
  • Supported features: Autofocus, in-camera aperture control, and Exif data recording, when supported
  • Autofocus selection: Phase detection or contrast detection
  • Tripod foot: Detachable, with a 1/4″-20 thread
  • Port: micro-USB

Manufacturer

Type
Lens Adapter
Compatibility
Sony

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (1)

  1. 5 stars
    0
  2. 4 stars
    0
  3. 3 stars
    0
  4. 2 stars
    0
  5. 1
Review this product
  • kostasaggouras
    1
    6 out of 8 members found this review helpful

    In sony a6400 tested with yongnuo 50mm f1.8, Tamron 17-50 f2.8, and Tamron 70-200 f2.8. With the yongnuo, it does not recognize the aperture and permanently shows f/4 no matter what you do. Also, at some point, when you open the aperture from the camera, it makes a "bang" sound and fully opens the aperture, resulting in an overexposed image. Additionally, the autofocus does not always work, and even when it does, it never manages to "lock" onto the subject and stay focused. It constantly hunts for focus. With the Tamron lenses, it correctly displays the f-stop, going from 2.8 to 2, and indeed makes the lenses faster. However, the autofocus still has the same issues, whether in phase detection or contrast detection mode. I have tested it with all available firmware updates, and none of the problems were resolved. I discourage anyone considering purchasing it. It is the most wasted 150 euros I have ever spent in my life. Stay away.

    Translated from Greek ·
    Did you find this review helpful?
  • In sony a6400 tested with yongnuo 50mm f1.8, Tamron 17-50 f2.8, and Tamron 70-200 f2.8. With the yongnuo, it does not recognize the aperture and permanently shows f/4 no matter what you do. Also, at some point, when you open the aperture from the camera, it makes a "bang" sound and fully opens the aperture, resulting in an overexposed image. Additionally, the autofocus does not always work, and even when it does, it never manages to "lock" onto the subject and stay focused. It constantly hunts for focus. With the Tamron lenses, it correctly displays the f-stop, going from 2.8 to 2, and indeed makes the lenses faster. However, the autofocus still has the same issues, whether in phase detection or contrast detection mode. I have tested it with all available firmware updates, and none of the problems were resolved. I discourage anyone considering purchasing it. It is the most wasted 150 euros I have ever spent in my life. Stay away.

    Translated from Greek ·
    6
  • See all
139,00 €
14,00 €   shipping cost