It doesn't seem like that long ago since memory cards of this size were just considered unnecessary. Back in the days where a 128Mb card would serve all your purposes it was hard to image the need for anything bigger. However since photographic and related technologies have developed giving rise to more complex and higher quality images, as well as the introduction of RAW files (like a digital negative), the need for such cards is clear. This is the SanDisk Extreme III 4Gb SD Card. It's ideal for photographers who require the very best performance from their equipment, as it's designed to work even in the harshest conditions. This card also comes in different ...  Read the complete review

I bought the Sandisk Extreme III 4Gb SD due to the quality of the 2Gb version made by the same company which I also own. I assumed that if my 2Gb version was speedy, the 4Gb version would be equally quick. But was I right? ...Absolutely... Like it's little brother, the 4Gb version uses 'ESP' technology. This stands for 'Enhanced Super-Parallel Processing' - I'm not really sure what this means, but it's probably tech jargon for "it's fast". With a minimum 20MB per second read and write speed, this product is quick enough to use for hi-def video capture and continuous DSLR shooting. Therefore, if you're a ...  Read the complete review