Why CFast 2.0 is a great choice for 4K video


There’s no doubt that 4K video is gaining in popularity with the mainstream. The lower resolution of HD is almost yesterday’s technology. 4K video for the film and video industry has a resolution of 4096 x 2160 (sometimes referred to as Cinema 4K). HD 1080p video, on the other hand, has a resolution of 1920 x 1080. At about 4 times the number of pixels of standard HD, 4K provides better overall quality with the higher resolution. And if you only need to output HD video, the added data you get from shooting 4K gives you much more data to start, so you won’t lose any resolution in post-production. But along with all those added pixels in 4K comes a big challenge. What type of media can be used to store all that data? You’ll need something fast—with a high capacity to keep you shooting longer.

CFast 2.0 takes on 4K

The CFast™ 2.0 memory card format was developed through a collaboration of leading CompactFlash® Association members. Since CFast cards are specifically designed for high data rates and high-resolution image capture, it’s a great choice for shooting 4K video. But don’t confuse CFast with CompactFlash. Although similar in appearance to CompactFlash cards, you can’t fit a CFast card in a CompactFlash slot, and it can’t be read by a standard CompactFlash card reader. This card definitely stands apart. CFast 2.0 memory cards offer significantly higher data-transfer speeds than CompactFlash cards.

Photographers shooting in 4K, like wildlife or sports photographers, depend on fast data transfer on their camera, because it means their memory buffer can clear out faster when shooting in burst mode. But if you shoot a lot of 4K video, you’re putting a heavy load on your memory card. Some camera manufacturers are moving to a different media to do the heavy lifting of all that big data. Manufacturers such as Canon and Blackmagic have recognized the benefits of CFast 2.0 and have built CFast 2.0 slots into some of their latest cameras. More will inevitably follow.

With the news that Lexar has announced the new 512GB Professional 3500x CFast 2.0 memory card, we think this card format is poised for the big leagues. With a 512GB card, you can shoot longer, continuous bursts to record all the action. With CFast 2.0 memory cards, the faster speed means you can capture the highest-quality RAW, ProRes, and 4K video with next-generation, cinema-grade video cameras. And with a read transfer speed up to 525MB/s*, the card dramatically accelerates post-production workflow.

Whether you’re a photographer who wants to combine RAW image quality with the impressive, high-performance shooting speed, or you’re looking to capture the highest resolution 4K video, CFast 2.0 cards offer the speed and capacity needed to handle the massive data requirements of shooting in 4K and beyond.


*Up to 525MB/s read transfer, write speeds lower. Speeds based on internal testing. Actual performance may vary.