Amazon.com Lexar Media's high-speed digital film helps your camera capture images faster, so you spend more time taking pictures and less time waiting on your camera. Lexar's CompactFlash cards are individually speed rated so you know the minimum capability of the card. Lexar uses the same rating system used by the CD-ROM industry, where a data transfer rate of 1x equals 150 kilobytes per second (KBps). The higher the speed rating, the faster your camera will be able to write images to the memory card. For professional shooters who need immediate confirmation they've captured the shot or who want to identify accurate exposure levels or bracketing range, Lexar's patented 24x speed (3.6 MBps) transfer rate makes the card ideal for fast-paced applications such as photojournalism, sports, and fashion. And Lexar's solid-state design provides reliability in harsh shooting environments, mandated by professionals throughout the world. The Digital Film Compliance seal assures you that your Lexar Media digital film is 100 percent compatible with your CompactFlash digital camera. It can also be used in all other digital devices that support the CompactFlash format, such as PDAs, video recorders, and MP3 players. All Lexar Media CompactFlash cards meet the CompactFlash Association's specifications and are marked with the CF+ symbol. The 24x Professional series cards are backed by a lifetime limited warranty.