2011-03-05

Sony Alpha-77 vs Nex-7

A77 預計搭載新款 16-50mm 且為恆定光圈的 Kit 鏡頭,如果堅決不用索尼的全片幅相機,這個鏡頭很吸引,畫質應該會比現在的 DT 18-55 好,而且會用上 SSM 吧?感光元件將採用 2400萬畫素,跟現在的全片幅相機一樣了!可錄製 1080p/30fps、720p/60fps 或 720p/30fps 的動態影片,解像力沒有進步,索尼還是擔心會威脅到她的動態攝影機啊,還有過熱問題不知解決了沒有?

對焦系統方面將採用更快並可自動微調的設計,意味著 A77 的對焦速度比已經很快的 A55 更快,連拍能力超過 15 fps,對焦點超過 11 點?機身背後顯示螢幕則將採用300萬畫素的 OLED 面板(意味著 A77 可拍 2K 甚至 4K movie?)!回家放上普通屏幕看可能會失望啊,不過顯示螢幕似乎將不會採用可掀式的設計,對於拍鳥有點不方便。

至於 NEX-7 方面則同樣採用 2400 萬畫素的感光元件,同樣可對應錄製 1080p/30fps、720p/60 fps 或 720p/30 fps 的動態影片,機身顯示螢幕也可能是採用300萬畫素的 OLED 面板,並且新增更多的手動設定功能。NEX-7 正式發表時間估計同樣是在 7 月中旬,上市時程則可能會安排在 9 月,包含 Ki t鏡頭的售價可能為美金 1300 元。其實 Nex-5 用來配舊式手動鏡頭已經很夠用,不過更高解像度的屏幕對於手動對焦來說肯定會更有幫助。

The followings come from Sony Alpha Rumours Blog:

Finally the wait is over! We know when Sony will show the new A77 to the world! A trusted source confirmed the Sony A77 will be announced on July 7 (as some reader noticed that’s not a casual date 7/7 for the A77). It will be priced at $1099 including the kit lens! As I already told you the camera will be in Stock in late September/early October. Feel free to share that news on your blog or forum. But would be nice to link back to SonyAlphaRumors as we have been the first to post that! (Thanks to our special anonymous sources!!!).

Coming with:

  • New kit lens (A Sony 16-50mm zoom. Compared to the Zeiss 16-80mm f/3.5-4.5 it will have a constant aperture and probably have a bit higher price. 
  • 24 Megapixels sensor (The combination of the new sensor+new Zeiss lens delivers 62% more resolution than the A55 16 Megapixel sensor.)
  • Video 1080p/30fps, 720p/60fps and 720p/30fps high-definition video AF fine-tuning capabilities. 
  • A source told us that it has an improved focusing system (quite fast and accurate). 
  • 3 Million dot OLED viewfinder (more than double of the resolution fo the current Sony A55/33 viewfinder.)
  • Magnesium alloy body.

從 D7000 的漏油事件來看, A55/A33 的半透明反光板還有多一個好處,就是為感光器阻擋外來的污染物,如果將來A77的反光板能夠拆卸的話,清潔就更方便,拆卸後光線就可以直接射入感光器,雖然失去相位對焦的速度優勢,但對一些人來說可能比較看重照片質素的提升。




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