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標題: Canon展示120MP CMOS感光元件 [打印本頁]

作者: xray1974 時間: 2010-8-25 18:59
標題: Canon展示120MP CMOS感光元件

資料來源：http://www.canon.com/

沒錯，不是 12MP(MP指百萬畫素)，真的是 120MP！這是 Canon 最新展示的一億兩千萬畫素 APS-H CMOS 感光元件(APS-H 就是 EOS 1D 系列使用的 CMOS尺寸: 29.2x20.2mm，搭配 EF鏡頭時焦長轉換率 1.3x)，再度創下 APS-H 尺寸等級的最高畫素記錄。

其實先前的紀錄也是 Canon 自己創下的，在 2007年就曾經發表 50MP 的 APS-H CMOS，這次又進化為 2.4X，而比起目前 APS 尺寸的 16MP 主流畫素也達 7.5X 之多！

這款 120MP CMOS 拍攝的照片畫素將達 13280 x 9184，大概要使用 7x9 部 Full HD LCD 的螢幕畫面才能完整顯示這樣的照片。

不過當年的 50MP CMOS 並沒有實際生產出 DSLR 來，這次的 120MP CMOS 應該也只是宣示意味濃厚的樣品(這麼高畫素的CMOS生產良率勢必不佳，成本也可能高的嚇人)，用來證明 Canon 在相機元件的領導地位，在未來幾年內仍不太可能推出搭載這種元件的 DSLR 。

要使用這種感光元件當然也必須配合高速的平行運算/傳輸，Canon 也成功的設計了高速的存取控制，最高可達 9.5fps 傳輸。

此外，這款元件也可用來進行 Full HD 錄影，但僅僅只會用到其中 1/60 的 CMOS 面積上的畫素而已。使用這種感光元件另一個好處是，即使是數位變焦拍攝的照片(拍攝時畫素當然不能這麼高)，也可享有更清晰的影像。這種也是目前數位相機慣用的類似 Smart-Zoom 功能。

canon的新聞稿

TOKYO, August 24, 2010—Canon Inc. announced today that it has successfully developed an APS-H-size*1 CMOS image sensor that delivers an image resolution of approximately 120 megapixels (13,280 x 9,184 pixels), the world's highest level*2 of resolution for its size.
Compared with Canon's highest-resolution commercial CMOS sensor of the same size, comprising approximately 16.1 million pixels, the newly developed sensor features a pixel count that, at approximately 120 million pixels, is nearly 7.5 times larger and offers a 2.4-fold improvement in resolution.*3
With CMOS sensors, while high-speed readout for high pixel counts is achieved through parallel processing, an increase in parallel-processing signal counts can result in such problems as signal delays and minor deviations in timing.By modifying the method employed to control the readout circuit timing, Canon successfully achieved the high-speed readout of sensor signals.As a result, the new CMOS sensor makes possible a maximum output speed of approximately 9.5 frames per second, supporting the continuous shooting of ultra-high-resolution images.
Canon's newly developed CMOS sensor also incorporates a Full HD (1,920 x 1,080 pixels) video output capability.The sensor can output Full HD video from any approximately one-sixtieth-sized section of its total surface area.
Images captured with Canon's newly developed approximately 120-megapixel CMOS image sensor, even when cropped or digitally magnified, maintain higher levels of definition and clarity than ever before.Additionally, the sensor enables image confirmation across a wide image area, with Full HD video viewing of a select portion of the overall frame.
Through the further development of CMOS image sensors, Canon will break new ground in the world of image expression, targeting new still images that largely surpass those made possible with film, and video movies that capitalize on the unique merits of SLR cameras, namely their high mobility and the expressive power offered through interchangeable lenses.

*1	The imaging area of the newly developed sensor measures approx. 29.2 x 20.2 mm.
*2	As of August 20, 2010. Based on a Canon study.
*3	Canon's highest-resolution commercial CMOS sensor, employed in the company's EOS-1Ds Mark III and EOS 5D Mark II digital SLR cameras, is equivalent to the full-frame size of the 35 mm film format and incorporates approximately 21.1 million pixels.In 2007, the company successfully developed an APS-H-size sensor with approximately 50 million pixels.

作者: davysnn 時間: 2010-8-26 17:22
這算是技術性的宣示吧!呵~
實際拿出來用,很多記憶卡只要一開連拍馬上被打趴..

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