A口也是相位对焦。

有一统相机标准的意味。
好事

放下身段的骚妮更可爱一些

期待E口牛头如潮！

适马头在EF口上最跑，在A口上很少， 佳能是有所保留的。

好消息呵!
正对佳能EOS和DC的设计发怒呢,太弱智了,可惜了镜头  .
等EF镜头扩大NEX机身能AF时,就考虑这样的组合.

逻辑很简单。如果所有其他器材的用家都买了个NEX转接（做备机或者其他用途），本身已经很挣钱了。万一这些用家也想走小快灵的路线，看上索尼的小巧质优的AF镜头，可以挣的钱就更多了。

[流氓无敌兔 编辑于 2010-09-22 17:06]

不管你是谁家的镜头，都可以到索尼这买机身。

EF卡口推出时间早，接口本身及协议都非常简单，完全是小儿科

索尼v5

这个得等佳能也公开出EF卡口的资料才行……

其实sony早就这么干了，不然咋会nex刚上市，高质量的转接环已经跟雨后春笋似的纷纷冒出来?
买一个回来反向工程再开模都得很久呢。

英文全文。

When we first reviewed Sony's NEX-5 (and its slightly cheaper sibling the NEX-3), we raved about the camera's capabilities and image quality, but railed against the inefficiencies of its user interface. We and many of our readers were also disappointed by the lack of aperture control in Movie mode.

Huge kudos, then, to Sony for today announcing a firmware update, due for public release in mid-October of this year, that addresses some of the most annoying user interface issues, and adds aperture control in Movie mode. It also brings support for Sony's motor-equipped lenses (SAM and SSM models) through Sony's E-mount to A-mount adapter.

Here's a detailed list of the changes in this firmware update:

    *

      Adds a user-selectable option to drop you back into whatever menu item you had last selected, vs. always taking you to the top of the menu system when you hit the Menu button. (A huge improvement in usability; one that frequently had us gnashing our teeth as we fiddled with the cameras many options while testing the prototypes.)
    *

      Adds a user-selectable option to make the NEX menus wrap so scrolling off the bottom will take you back to the top entry again. (Not quite as important as the first change above, but this still removes an enormous annoyance.)

    *

      Adds customizable buttons: A gigantic improvement for experienced users. The center button and lower-left button on the camera's back (see illustration above) can now have a wide range of camera functions assigned to them. Sony reps at the press event didn't have an exact number for how many functions could be assigned, but said it was "a whole passel" -- potentially 20 or more. Configurable options include things like white balance, ISO, exposure mode, etc. The center button can have up to three functions assigned to it simultaneously, which can be selected by pressing multiple times or pressing and scrolling with the rear control dial. The lower left button supports just one function at once. Bottom line, you'll be able to have up to four camera functions close at hand, rather than having to delve into the menu system.
    *

      Aperture control in Movie mode: Probably the biggest single request from video shooters, the new firmware will let you control the aperture used during video shooting in two different ways. In Auto mode, whatever amount of "background defocus" you select in still-image mode will apply to video recording as well. Likewise, if you've selected Aperture Priority mode for still shooting, the same aperture setting will apply when you switch to movie recording.
    *

      Support for A-mount Sony lenses with internal motors. Initially, the NEX cameras only supported the older A-mount lenses in manual focusing mode. The update will support autofocus operation with A-mount lenses that have internal focus motors. (We didn't take time to do a full count, but we think that's a total of about 12 lens models.) NOTE, though, that you actually have to upgrade the firmware in the lens adapter, as well as in the camera itself. (We were surprised to learn that the A-mount to E-mount adapter actually has a chip in it, to translate data between the lens and the camera body. As part of the update process, then, you'll need to attach your Sony A-mount adapter to the camera, so the camera can update the adapter's firmware.)

Another important announcement included a roadmap of NEX lenses: A total of seven new E-mount (NEX) lenses will be announced in the next two years; four coming in 2011 alone. With the 18-200mm lens only just starting to reach stores, the lack of lenses has been seen as a limitation of the NEX cameras. Sony clearly wanted to send a strong signal today that they're addressing the issue. Here's what they have scheduled:

    *

      2011
          o

            Wide-angle Carl Zeiss prime lens
          o

            Telephoto zoom
          o

            Macro lens
          o

            Portrait lens
    *

      2012
          o

            High-performance standard zoom
          o

            Wide-angle zoom
          o

            Medium Tele

Sony also detailed a few Alpha product line expansion plans:

    *

      First, Sony announced that what looks will be the A700 replacement will be based on their translucent-mirror technology, as seen in the A33/55. Sony didn't give many details, but they did say that it'll have a new sensor capable of full-resolution HD recording, and will be "much more powerful" than the A55.
    *

      Other additions in the Alpha category will include a vertical grip for the coming model, and a new flash unit as well. (Sony also previewed a new flash unit for the NEX line.)

Finally, Sony representatives said they will proactively support the development of third-party lenses and adaptors for the E-mount. Because the E-mount has the shortest flange-sensor distance in the industry, there's more room to fit in an adapter and still have foreign lenses focus properly. Mr. Katsumoto made a point of saying that Sony was very much in favor of this, and was interested in proactively working with various companies to make more adapters. In a private conversation with Imaging-Resource_com Publisher Dave Etchells after the formal presentation, Mr. Katsumoto underscored that Sony would release full engineering specifications for the E-mount to third party adapter makers; a pretty unusual stance in an industry where manufacturers tend to jealously guard such information.

--by Dave Etchells

http://www_imaging-resource_com/NEWS/1285109120.html

Finally, Sony representatives said they will proactively support the development of third-party lenses and adaptors for the E-mount. Because the E-mount has the shortest flange-sensor distance in the industry, there's more room to fit in an adapter and still have foreign lenses focus properly. Mr. Katsumoto made a point of saying that Sony was very much in favor of this, and was interested in proactively working with various companies to make more adapters. In a private conversation with Imaging-Resource_com Publisher Dave Etchells  after the formal presentation, Mr. Katsumoto underscored that Sony would release full engineering specifications for the E-mount to third party adapter makers; a pretty unusual stance in an industry where manufacturers tend to jealously guard such information.最后，索尼代表说他们将积极支持E卡口的第三方镜头和转接环的开发。因为E卡口有工业界最短的法兰距，所以有足够的空间安装转接环并且让第三方镜头能够对焦。胜本徹先生强调索尼对此非常赞赏，并且对主动和第三方公司合作制作更多的转接环有着很大兴趣。在和i-r的私人会谈上，胜本徹强调索尼将会把E卡口的全部工程资料交给第三方转接环制造者。这在业界是一个非常不寻常的举动，因为制造商一般更喜欢保持这些秘密。