Lexar Media CompactFlash cards are individually speed rated so you know the minimum capability of the card. We use the same rating system used by the CD-ROM industry, where data transfer rate of 1X equals 150 kilobytes (KB) per second. The higher the speed rating, the faster your camera will be able to write images to the memory card.

Digital Film Designed for the Professional Photographer
For the professional shooter who needs immediate confirmation they've captured "the shot" or wants to identify accurate exposure, levels, or bracketing range - Lexar Media's patented 4X, 12X, and 40X speed (1X=150KB/sec.), (4X=600KB/sec.), (12X=1.8MB/sec.), and (40X=6.0MB/sec.) transfer rate respectively) is critical. Ideal for fast-paced applications such as photojournalism, sports and fashion, Lexar Media's High-Speed Series and Professional Digital Film brings out the ultimate performance from your professional equipment.

Solid-state Design with Built-in USB Intelligence
Professionals know that a single image can be more valuable than all their equipment combined. To risk losing an award-winning image because of a hard disk failure or breakdown is unacceptable. Lexar Media's solid-state design provides the ultimate reliability in harsh shooting environments, mandated by professionals throughout the world. And with built-in USB functionality, Lexar Media's Card Readers can quickly transfer your large images to your computer quickly and easily - up to 25 times faster than a serial cable connection - providing you more shooting time. You also save camera battery life by eliminating inconvenient tethered downloads.