文章 ID : 00138147 / 最後修改 : 20/06/2018

A 接環與 E 接環有什麼差別?

本文的適用產品及分類

For interchangeable lens cameras produced by Sony, there are two types of mount standard: A-mount and E-mount.

The mount is the part that joins the camera’s body and the lens. To shoot images, attach the lens to your camera’s lens mount and let the lens and the body recognize each other.

  • A-mount (ILCA-xx, DSLR-Axx, SLT-Axx)
    Mount standard adopted on models that have a mirror or a translucent mirror.
  • E-mount (ILCE-xx, NEX-xx)
    Mount standard adopted on mirrorless models.

Image

[1]Mount on an A-mount body
[2]Mount on an E-mount body

  • A-mount and E-mount features
    A-mount cameras with Sony Translucent Mirror Technology offer the advantages of full-time phase-detection autofocus. The short flange back distance of mirrorless E-mount models makes it possible to design compact, high-performance bodies and lenses that offer outstanding handling and mobility.
    A-mount
    A-mount
    [1] Lens mount  [2] Flange back distance
    [3] Translucent Mirror  [4] Image sensor plane
    E-mount
    Image
    [1] Lens mount  [2] Flange back distance
    [3] Image sensor plane
  • Image sensor size
    Both A and E mount cameras have full frame and APS-C sensors options. Among the many sensor sizes in common use, full-frame is considered to be a large format while APS-C is a medium format. Both are popular for their individual advantages.
    image sensor
  • About A-mount lenses and E-mount lenses
    Sony provides A-mount lenses and E-mount lenses that meet each mount standard for camera bodies. The name of an A-mount lens starts with “SAL” while the name of an E-mount lens starts with “SEL.”

    For lenses and accessories compatible with other brands other than Sony, refer to FAQ
    Can I use lenses and accessories manufactured by companies other than Sony?

    For the kind of lenses which can be used, refer to FAQ
    What kinds of lenses can be used?
  •  
  • How to use an A-mount lens on an E-mount body
    Since A-mount and E-mount have different diameters, they are not interchangeable. However, you can use an A-mount lens on an E-mount body by using a Mount Adaptor.
    NOTE: You cannot use an E-mount lens on an A-mount body.

    When you use a Mount Adaptor, there may be some limitations such as unavailability of the autofocus function or SteadyShot function.

    For the differences among Mount Adaptors, refer to FAQ
    What is the difference between the LA-EA1, LA-EA2, LA-EA3, and LA-EA4 lens mount adapters?