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Longevity of Canon CMOS Image Sensors
How long will a CMOS sensor work before it starts to "fail"? My instinct tells me that anything with color will eventually fade, and there are color filters over each photosite on the sensor. Obviously, color is just one aspect of longevity, and issues like camera obsolescence as well as other mechanical factors are involved. But theoretically, how long would a sensor keep on working before it runs into problems?
It’s difficult to answer your question, because there is no easy way to simulate aging with an image sensor. However, the microlenses on Canon CMOS sensors do a good job of sealing the RGB filter elements to protect them from exposure to atmospheric gases.
Additionally, the CMOS sensors used in EOS cameras are usually in "dark storage" behind the camera’s focal plane shutter except during exposures or cleaning, so that’s another way in which the sensors are well protected. All we can really say is that we’re building a track record over time; Canon’s first CMOS image sensor for digital SLRs appeared six years ago with the EOS D30, and to date there is no evidence of sensor failure or any change in color accuracy with Canon CMOS image sensors regardless of age or usage conditions.
http://www.usa.canon.com/dlc/con ... t&articleID=246
Canon 的CMOS 壽命
因為並沒有一個簡單的老化試驗來驗證CMOS多久會開始壞掉
而以目前已上市六年的 D30 來看 並沒有任何證據顯示Canon 的 CMOS 有壞掉或是影響色準的問題
[ 本帖最後由 chenwu 於 2007-5-1 00:10 編輯 ] |
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