• 7

Micro Four Thirds 規格發表

出現了!!!
dpreview上面
http://www.dpreview.com/news/0808/08080501microfourthirds.asp

Micro Four Thirds

更小的4/3相機出現了!!!
感光元件大小維持不變
取消了反光鏡以及光學觀景窗的設計 使得相機機身得以成功縮小
不過接環也變比較小了 但是新聞稿上說"compatible with 4/3 lens"我想應該是可以轉街的
2008-08-05 13:10 發佈
grgeo wrote:
出現了!!!dpre...(恕刪)


Micro Four Thirds facts and features
Same Four Thirds sensor size (18 x 13.5 mm)
Flange back distance half that of Four Thirds (20 versus 40 mm)
Lens mount diameter 6 mm smaller (44 versus 50 mm)
Contrast Detect AF is implied (passive would require an external sensor)
Lens to body electrical contact points up to 11 from 9
Lenses of same focal length and maximum aperture considerably smaller than Four Thirds
Enables slim and compact lens-interchangeable digital cameras
Lack of mirror well necessitate a high quality EVF (or an EVF/Viewfinder-less design)
Current Four Thirds lenses can be used with an adapter
Micro Four Thirds facts and features
*Same Four Thirds sensor size (18 x 13.5 mm)
*Flange back distance half that of Four Thirds (20 versus 40 mm)
*Lens mount diameter 6 mm smaller (44 versus 50 mm)
*Contrast Detect AF is implied (passive would require an external sensor)
*Lens to body electrical contact points up to 11 from 9
*Lenses of same focal length and maximum aperture considerably smaller than Four Thirds
*Enables slim and compact lens-interchangeable digital cameras
*Lack of mirror well necessitate a high quality EVF (or an EVF/Viewfinder-less design)
*Current Four Thirds lenses can be used with an adapter

最後一點有提到,現行鏡頭可用轉接還轉接喔~只是光圈大小應該會再變化
不過這樣新的設計,幾乎就像是"可以換鏡頭的DC"了!!當然希望機械性能方面會比DC強上許多才會吸引人~~
另外這樣新的設計,"錄影功能"加在Micro Four Thrids大概也不會令人感到意外囉
Olympus and Panasonic have announced a new, mirrorless format / lens mount based on (and compatible with) Four Thirds. The Micro Four Thirds system uses the same sensor size (18 x 13.5 mm) but allows slimmer cameras by removing the mirror box and optical viewfinder. The new format has three key technical differences: (1) roughly half the flange back distance (distance from mount to the sensor), (2) a smaller diameter lens mount (6 mm smaller) and (3) two additional contact points for lens-to-body communication (now 11 points). Removing the mirror mechanism allows this shorter flange back distance, meaning lenses for the new mount can be considerably smaller than current Four Thirds designs. The format will require framing to be carried out using Live View on either the LCD monitor or an EVF. Existing Four Thirds lenses can be used on Micro Four Thirds cameras using an adapter. Neither company is as yet making product announcements (we expect some more news in this respect closer to Photokina).

無反光鏡, 現有 4/3 system 鏡頭可透過轉接環接上, 取景要由 EVF (Live View), 感光元件尺寸不變

三特點:
1. 接口到感光元件的距離縮短.
2. 接口口徑變小, 直徑約小了 6mm.
3. 電子接點多了兩個, 共 11 點.

這不算 DSLR (因為它沒有反光鏡)
特點在於感光元件較一般 DC 大, 還有可由轉接環接上原 4/3 system 的鏡頭
水啦~更小化!!
不過...鏡頭怎麼辦??
再出新系列?
廣角bye-bye?
一系列超薄餅干鏡?


看來Olympu的策略是跟主流DSLR走反方向, 4/3 CMOS不變, 但是機身鏡頭變小...不過反光鏡/觀景窗拿掉了, 嚴格說來就不是SLR了...

我個人有點失望啦.. 雖然現有4/3鏡頭可以透過轉接環使用,但是E420配上許多現有的鏡頭已經有點頭重腳輕,如果Micro 4/3機身配上現有鏡頭這個問題就更嚴重了. 而且如圖示,轉接環為了要有電子轉接功能,看起來很厚,那減少的20mm配上轉接環也就不見了,在還沒看到實際產品之前我對這個概念挺失望的...

對於沒有鏡頭包袱的人來說或許還有市場在,可能會吸引類單眼族群或者想跨入DSLR但是又覺得DSLR便利性不夠的消費者吧.. 但是完全沒有解決任何現有E系統使用者想要改善的問題...

這樣也好啦,我的E-300用了3年多,也算有鏡頭包袱,本來想說如果是新機型要出來,最好界於E-520和E-3之間, (例如有防手震,翻轉LV LCD這些的,但是不用E-3的防水...等於E-3的平民簡化版), 那我可能就會敗了... 看到這個新聞我就可以先不想敗家努力練技術了...
akgbking wrote:
最後一點有提到,現行鏡頭可用轉接還轉接喔~只是焦段倍率應該會在變化,可能變成2.5X或甚至3X之類的
...(恕刪)


很奇怪的是會有什麼變化?
感光元件尺寸不變,所以視角不會變。
多了兩公分的鏡後距,最大光圈會變小?
akgbking wrote:
可能變成2.5X或甚至3X之類的


如果CMOS尺寸不變, 應該還是維持x2才對...

AlseneWu wrote:
多了兩公分的鏡後距,最大光圈會變小?

是少了2公分的鏡後距... 光圈變小是因為卡口從50mm到44mm...
感謝前輩的指正...小弟把自己的文章修改過來囉
可換鏡頭的DP1 4/3版
卡口大小跟光圈大小無關吧!!
若價格漂亮,一些頂級的DC應該會挫著等??
好久沒有人把牛皮吹的這樣清新脫俗了
  • 7
內文搜尋
X
評分
評分
複製連結
請輸入您要前往的頁數(1 ~ 7)
Mobile01提醒您
您目前瀏覽的是行動版網頁
是否切換到電腦版網頁呢?