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Old Nov 7, 2004, 2:31 PM   #1
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I´ll buy a digital camera, and it has 640 x 480 30fps video mode, i don´t know if i can use a normal 1Gb compact flash, is that going to work, or i need a ultra high speed compact flash???

If i buy the normal compact flash, whats is going to happen when i start to record??

Please , I need some advices about this!!!!
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Old Nov 7, 2004, 4:51 PM   #2
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This is a horrible issue and is a major flaw with compact flash. The memory manufacturers do not use a standard so it is (i) hard to tell what speed a card is, (ii) what that speed really means, and (iii) whether a camera needs it. You can find two cards called "high speed" (from different companies) and they have different performance :angry: Even more confusing is the fact that two Sandisk (regular) memory cards, for example, with different manufacturing numbers will perform differently!!!

I did some research for the Canon Powershot S1 IS (which I actually ended up buying; it records at 640x480@30fps), and the speed of the memory card DOES matter. If the speed is too slow, the video stops recording. For instance, a normal speed 1GB compact flash card will hold 8 seconds of video, instead of holding 9 min (if it were high speed and working properly)...

Here is an excellent post, from another forum, tabulating the performance of various cards for the Canon Powershot S1 IS:


This might differ for other cameras but you can get a rough idea of what happens. If you look at the cards that don't work at the bottom, they stop after 10 or 20 seconds. For the Canon S1 IS (this will vary by camera), the requirement seems to be around 40x rated speed. I don't know what the requirement are for other cameras but the 40x sort of shows that you need a high-speed cards for video...

Hope that helps :|
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