預計利用五一假期到祖國江南走走，所以想再添購一張CF Card。雖然手邊的 Extreme IV 8G 使用上相當滿意，但價格頗高。所以，重新Review 哪張卡比較合適 40D 使用。參考網路的資訊與網友的建議及預算，SanDisk Extreme III 8G 已經足夠應付 40D 的日常使用。下所列為國外網友，針對 40D 對各家 CF 開的讀取速度測試，可供各位網友參考。

 

轉載自 http://www.robgalbraith.com/bins/camera_multi_page.asp?cid=6007-9257

Canon EOS 40D Write Speed (Firmware Version 1.0.8)
 This page was last updated on April 16, 2008

The data in the table below was derived by timing how long it took the Canon EOS 40D to write 20 Large Fine JPEG and then 16 RAW .CR2 photos to the memory card. Timing commenced when the camera's card status light illuminated, and stopped when the light went out. Each test cycle was performed 3 times (if the card's capacity allowed for that) to ensure accurate results.

Prior to both JPEG and RAW testing, all CompactFlash cards were first secure erased on a computer, then formatted in the camera. The same test scene was photographed, under the same illumination, for all tests. The identical camera settings and lens were also used for all tests.

 Interpreting the results The data can be sorted by manufacturer, card type, rated capacity and file format, in both ascending and descending order, by clicking on the appropriate column header. When sorting by JPEG or RAW, the fastest 10% for that format are highlighted in blue. You can view extra information for a card by clicking the icon to the left of the card's name, or for all cards at once by clicking Show Extra Info in the Memory Card header field. Note that MB/sec refers to megabytes per second, and that all calculations are based on 1 megabyte = 1,048,576 bytes.

Memory Card  Show Extra Info
Card Type Rated Cap. JPEG RAW
SanDisk Extreme Ducati 8GB 
CF I 8GB 8.8MB/s 11MB/s
SanDisk Extreme Ducati 4GB 
CF I 4GB 8.5MB/s 10.9MB/s
SanDisk Extreme IV 2GB 
CF I 2GB 8.6MB/s 10.9MB/s
Hoodman PRO 150X-133X 2GB 
CF I 2GB 8.8MB/s 10.8MB/s
ATP Pro Max 1GB 
CF I 1GB 8.8MB/s 10.8MB/s
SanDisk Extreme III 1GB 
CF I 1GB 7.5MB/s 10.7MB/s
Ridata Pro 150X 2GB 
CF I 2GB 8.7MB/s 10.7MB/s
SanDisk Extreme IV 4GB 
CF I 4GB 7.6MB/s 10.6MB/s
Kingston Ultimate 133X 2GB 
CF I 2GB 8.5MB/s 10.6MB/s
Lexar Professional 133X 2GB 
CF I 2GB 8.5MB/s 10.4MB/s
Hoodman PRO 150X-133X 4GB 
CF I 4GB 7.6MB/s 10.2MB/s
Kingston Ultimate 266X 2GB 
CF I 2GB 7.7MB/s 10.2MB/s
Lexar Professional 133X 4GB 
CF I 4GB 7.8MB/s 10.1MB/s
SanDisk Extreme III 2GB 
CF I 2GB 7.3MB/s 10.1MB/s
SanDisk Extreme IV 8GB 
CF I 8GB 7.1MB/s 10MB/s
PNY Opt. PRO UDMA (2007) 2GB 
CF I 2GB 7.6MB/s 10MB/s
SanDisk Extreme III 30MB/s Edition 8GB note
CF I 8GB 7.6MB/s 10MB/s
Transcend 266X 2GB 
CF I 2GB 7.4MB/s 9.9MB/s
SanDisk Extreme III 30MB/s Edition 4GB note
CF I 4GB 7.4MB/s 9.8MB/s
Lexar Professional 300X 4GB 
CF I 4GB 7.3MB/s 9.8MB/s
Lexar Professional 300X 8GB 
CF I 8GB 7MB/s 9.8MB/s
PNY Opt. PRO UDMA (2007) 8GB 
CF I 8GB 6.9MB/s 9.7MB/s
SanDisk Extreme III 8GB 
CF I 8GB 6.9MB/s 9.7MB/s
Delkin PRO 305X 4GB 
CF I 4GB 6.8MB/s 9.7MB/s
SanDisk Extreme III 30MB/s Edition 16GB note
CF I 16GB 7.4MB/s 9.6MB/s
SanDisk Extreme III 4GB note
CF I 4GB 6.5MB/s 9.6MB/s
Transcend 266X 8GB 
CF I 8GB 6.7MB/s 9.5MB/s
Hoodman RAW 280X 2GB 
CF I 2GB 6.8MB/s 8.9MB/s
Delkin PRO 305X 16GB 
CF I 16GB 7.3MB/s 8.9MB/s
Maxell standard 2GB 
CF I 2GB 7MB/s 8.8MB/s
Ridata Pro 150X 8GB 
CF I 8GB 6.5MB/s 8.8MB/s
Hoodman RAW 280X 4GB 
CF I 4GB 6.5MB/s 8.7MB/s
ATP Pro Max II 300X 8GB 
CF I 8GB 6.2MB/s 8.7MB/s
Hoodman RAW 280X 8GB 
CF I 8GB 6.3MB/s 8.5MB/s
Transcend 120X 4GB 
CF I 4GB 6.3MB/s 8.5MB/s
SanDisk Ultra II 2GB 
CF I 2GB 7MB/s 8.5MB/s
SanDisk Extreme III 12GB 
CF I 12GB 4.8MB/s 8.1MB/s
Lexar Professional 133X 8GB 
CF I 8GB 4.6MB/s 8.1MB/s
SanDisk Extreme 2GB 
CF I 2GB 6.9MB/s 8.1MB/s
Kingston Ultimate 133X 8GB 
CF I 8GB 4.6MB/s 8.1MB/s
SanDisk Extreme III 16GB 
CF I 16GB 4.8MB/s 8.1MB/s
SanDisk Ultra II 4GB 
CF I 4GB 6.3MB/s 8MB/s
ATP Pro Max 4GB 
CF I 4GB 5.9MB/s 7.9MB/s
Lexar Prof. 80X (3rd ed.) 1GB note
CF I 1GB 6.7MB/s 7.9MB/s
Lexar Prof. 80X (3rd ed.) 2GB note
CF I 2GB 6.5MB/s 7.9MB/s
SanDisk Extreme 1GB 
CF I 1GB 6.4MB/s 7.8MB/s
Lexar Prof. 80X (3rd ed.) 4GB note
CF I 4GB 6.2MB/s 7.7MB/s
Transcend 133X 32GB 
CF I 32GB 5.5MB/s 7.6MB/s
Lexar Prof. 80X (1st ed.) 1GB note
CF I 1GB 5.8MB/s 7.3MB/s
Lexar High-Speed 40X 1GB 
CF I 1GB 5.7MB/s 7.2MB/s
Transcend 133X 16GB 
CF I 16GB 4.4MB/s 6.5MB/s
SanDisk Ultra II 8GB 
CF I 8GB 3.6MB/s 6.2MB/s
Hitachi Microdrive 6GB 
CF II 6GB 4.9MB/s 6.2MB/s
Ridata Lightning 233X 16GB 
CF I 16GB 4.4MB/s 6MB/s
ATP standard 1GB 
CF I 1GB 4.3MB/s 4.9MB/s
SanDisk standard 2GB note
CF I 2GB 4.1MB/s 4.9MB/s
Kingston Elite Pro 2GB 
CF I 2GB 4.2MB/s 4.8MB/s
Delkin PRO 1GB 
CF I 1GB 4.1MB/s 4.8MB/s
Seagate Photo Hard Drive 8GB 
CF II 8GB 3.4MB/s 4.8MB/s
Corsair 80X 1GB 
CF I 1GB 4.1MB/s 4.8MB/s
Kingston Ultimate 100X 4GB 
CF I 4GB 4.1MB/s 4.8MB/s
Transcend 80X 1GB 
CF I 1GB 4.2MB/s 4.8MB/s
Delkin PRO 2GB 
CF I 2GB 4MB/s 4.8MB/s
Pretec 80X 2GB 
CF I 2GB 4.1MB/s 4.7MB/s
Ridata 80X PRO II 2GB 
CF I 2GB 4.1MB/s 4.7MB/s
Kingston Elite Pro 1GB 
CF I 1GB 4MB/s 4.7MB/s
Hitachi Microdrive 4GB note
CF II 4GB 4MB/s 4.6MB/s
Hagiwara Zpro 2GB 
CF I 2GB 4MB/s 4.6MB/s
Transcend 45X 1GB 
CF I 1GB 3.7MB/s 4.4MB/s
Ridata PRO 52X 2GB 
CF I 2GB 3.6MB/s 4.3MB/s
PNY Optima 80X 1GB 
CF I 1GB 3.6MB/s 4.3MB/s
Shikatronics TurboF1 100X 2GB 
CF I 2GB 3.7MB/s 4.3MB/s
Kingston Ultimate 100X 2GB 
CF I 2GB 3.6MB/s 4.2MB/s
TwinMOS Ultra-X 140X 2GB 
CF I 2GB 3.6MB/s 4.2MB/s
Calumet ProSpec 110X 2GB 
CF I 2GB 3.3MB/s 3.9MB/s
Hama standard 2GB 
CF I 2GB 3.1MB/s 3.6MB/s
Delkin PRO 8GB 
CF I 8GB 3.1MB/s 3.5MB/s
SanDisk standard 4GB 
CF I 4GB 2.2MB/s 3.3MB/s
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