What Is a CFexpress Card? FAQs for Photographers and Videographers

Quick Answer

A CFexpress card is a high-speed memory card designed for professional photography and video. It uses the NVMe protocol for rapid data transfer, making it ideal for 4K/8K video and high-burst shooting. Choose CFexpress Type B for most cameras, and ensure your device supports the format.

CFexpress cards have become essential for modern photographers and videographers, but they can be confusing with different types and specs. This FAQ answers common questions to help you understand and choose the right card for your work.

We'll cover speed, compatibility, and practical tips, including how CFexpress compares to SD cards and what to consider for video recording.

What is a CFexpress card and how does it work?

A CFexpress card is a removable storage medium that uses the PCIe interface and NVMe protocol to deliver very high read and write speeds. Unlike older formats like CompactFlash or SD, CFexpress is designed for the demanding data rates of modern cameras, especially when shooting 4K or 8K video or capturing rapid bursts of stills.

The card contains a controller and flash memory that communicate with your camera or card reader over a PCIe bus. This allows data to transfer much faster than traditional SD cards, reducing buffer clearing times and enabling smoother video recording at high bitrates.

• CFexpress cards are available in Type A, Type B, and Type C form factors. Type B is the most common in professional cameras.

CFexpress vs SD: What's the difference?

The primary difference is speed and capacity. CFexpress cards offer significantly faster read and write speeds, often exceeding 1000 MB/s, while the fastest SD cards (UHS-II) typically top out around 300 MB/s. This makes CFexpress essential for high-resolution video and continuous shooting.

However, SD cards are more universally compatible and often cheaper. Many cameras still include an SD slot, but for professional workflows, the speed advantage of CFexpress is worth the higher price.

• If your camera supports CFexpress, it's usually the better choice for professional work.

Is CFexpress worth it for video?

Absolutely, especially if you shoot high-bitrate video like ProRes or RAW. The sustained write speeds of CFexpress prevent dropped frames and allow longer recording times without overheating. For example, a card like the Capture+ CFexpress Type B 4.0 is built for demanding workflows, making it a reliable choice for professional videography.

For casual video or vlogging, an SD card might suffice, but for paid work, the reliability of CFexpress is a worthwhile investment.

• Look for cards with high sustained write speeds for video.

How do I choose the right CFexpress card?

Check your camera's manual to see which CFexpress type it supports (usually Type B). Then consider the capacity you need based on your shooting habits. For video, ensure the card's sustained write speed meets your camera's bitrate requirements.

Also, consider the card's durability and warranty. Cards like the Capture+ CFexpress Type B 4.0 offer durable construction for on-the-go use, which is important for field work.

• Always buy from reputable brands to avoid counterfeit cards.

CFexpress Card Quick Checklist

Check compatibility

Confirm your camera supports CFexpress Type B (or the appropriate type) before purchasing. Avoid buying a card that won't fit.

Match speed to your needs

For video, look at sustained write speeds; for stills, consider burst rates. Higher speeds prevent bottlenecks.

Invest in a good reader

A high-speed card reader, such as one that supports USB4, will make file transfers faster. Don't bottleneck your workflow.

Product Facts

• Capture+ CFexpress Type B 4.0 Memory Card: CFexpress Type B 4.0 interface for fast data transfer, ideal for professional photography and videography, durable construction for on-the-go use. This card supports the latest interface standard, ensuring high speeds needed for 4K/8K video and rapid bursts, while its durability suits field work.

CFexpress cards are a significant upgrade for professionals who need speed and reliability. By understanding the basics, you can make an informed choice that supports your creative work.