As cameras keep making larger and larger files, photographers are carrying larger CF and SD cards. But size does not equal performance. Along with larger file sizes could come longer write times. manufacturers know that key to the larger files are faster writes, so they are working on the challenges at a feverish pace. Rob Galbraith has a test site where you can see how your cards measure up.
Rob Galbraith DPI: CF/SD Performance Database: “A memory card is a critical component in the professional photographer’s digital system. After all, it’s the thing that holds the pictures. We hope that the CF/SD Performance Database will, first and foremost, enable you to determine which cards offer the speed your workflow requires. But we encourage you to look at card performance holistically. While speed is important, so is the warranty, tech support and the reputation of the company whose name is on the label.”