Hello, I am looking to buy a new SD card but I am not sure which speed to buy. Can a camera cope with any speed card or does the camera have a limit to how fast it can write? For example, I see you can buy 600 speed cards but say the camera can only write at 400 speed, then it would not make sense to spend extra money on a 600 speed card. I see that the faster cards are UHS-I cards. I hadn't heard of this before, so looked it up on wikipeia: [URL]http://en.wikipedia.org/wiki/UHS-I#UHS_Speed_Class[/URL] It says "UHS memory cards work best with UHS host devices". What if my camera is not a UHS device? Would it work slower than the advertised speed in that instance? There doesn't seem any point buying a 600x UHS card if a non-UHS camera will only write at say 400x. I'm thinking of buying the new canon powershot 260sx hs. I have had a read of canon's web site but I can't find anything about whether their cameras support UHS, only a faq saying to use class 6 or higher. Should I buy the fastest card I can afford or do these speeds become meaningless after a certain rate? Thanks, Stephen.