Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Does the MC-11 adapter allow to retain the full frame sensor from Sigma 18-35mm f 1.8 EF lens to Sony E Mount body?

Sony A7iii camera body

3 Answers

Relevance
  • keerok
    Lv 7
    2 months ago

    The MC-11 adapter merely allows you to physically connect a Canon EF-mount lens to a Sony E-mount body. The size of the sensor (of the camera) is never affected. 

    If you mount a lens made for APS-C cameras to a full-frame camera, the image projected by that lens won't fully cover the full-frame sensor thereby producing a smaller image with fuzzy dark borders. Some full-frame cameras can automatically adjust the image, removing those ugly borders. You still can't deny the fact that the full-frame sensor is not fully maximized though.

    One other concern is that some APS-C lenses have protruding rear elements which may get in the way of the reflex mirror in a full-frame dSLR. That would be a very expensive repair job if ever but most probably, the adapter avoids that.

  • Sumi
    Lv 7
    2 months ago

    No, because the lens is not designed for full-frame (35mm) cameras.

    Because the Sigma 18-35mm f/1.8 EF is specifically designed for APS-C format cameras, it projects an image circle large enough for an APS-C sensor.  Therefore, if you use the lens on a full-frame camera you'll get a lot of vignetting.  The MC-11 won't help.  In short, you can't use any lens on a larger-format camera that it was designed for.  Now, there are cameras, Nikons come to mind, that have a crop mode which allows one to use APS-C (DX) lenses on full-frame (FX) bodies.  In crop mode, the camera automatically crops out the vignetting.

  • 2 months ago

    I'm not sure what you're asking, but if you want to know if the adapter will make a lens designed for APS-C suitable for a full frame sensor the answer's no.  At best you'll get severe vignetting.

Still have questions? Get your answers by asking now.