If you’ve been diving into modern mirrorless or cinema cameras, you’ve probably come across CFexpress Type A and Type B memory cards. They sound similar, but choosing the right one can seriously impact your workflow especially if you shoot high-resolution video or burst photography.
Let’s break it down in a clear, practical way so you can confidently decide what fits your needs.
What Are CFexpress Cards, Anyway?
CFexpress cards are the next generation of high-speed storage, built for today’s demanding cameras. Compared to older formats like SD cards, they offer:
- Greater reliability for professional use
- Much faster read/write speeds
- Smooth handling of 4K, 6K, and 8K video
The two main types: CFexpress Type A and CFexpress Type B – serve different needs depending on your camera and shooting style.
CFexpress Type A: Compact and Efficient
CFexpress Type A cards are small, lightweight, and efficient, making them ideal for compact professional cameras.
Cameras that use Type A:
- Sony FX3
- Sony A7S III
- Other select Sony Alpha cameras
These mirrorless cameras are popular with videographers and hybrid creators, so Type A cards are designed to keep up without adding bulk.
Key benefits:
- Compact size: Keeps camera bodies smaller and lighter
- Lower power draw: Helps extend battery life during long shoots
- Reliable performance: Handles high-quality 4K and compressed RAW video
Popular manufacturers:
- Sony
- SanDisk
- Lexar
- ProGrade Digital
- Delkin Devices
The trade-offs:
- Slower than Type B (but still very fast)
- Higher cost per gigabyte
The bottom line: Type A is perfect for creators who want portability without sacrificing performance.
CFexpress Type B: Built for Speed and Heavy Workloads
When it comes to their physical footprint and the speed of moving video data, CFexpress Type B cards are larger and significantly faster, designed for demanding production environments.
Cameras that use Type B:
- Sony BURANO
- Canon EOS C400
- Many Canon, Nikon, and cinema cameras
These are tools used by cinematographers and high-end content creators who need maximum performance.
Key benefits:
- Ultra-fast speeds: Ideal for 6K/8K and RAW video
- Excellent for burst shooting: No buffering delays
- Wider adoption: Supported across many professional systems
Popular manufacturers:
- SanDisk
- Lexar
- ProGrade Digital
- Delkin Devices
- Sony
The trade-offs:
- Larger physical size
- Higher power consumption
- Not compatible with Type A slots
Here’s the Bottom line: Type B is built for serious workloads where speed and reliability are critical.
Key Differences at a Glance
| Feature | CFexpress Type A | CFexpress Type B |
|---|---|---|
| Size | Smaller, compact | Larger |
| Speed | Fast | Extremely fast |
| Best For | Hybrid creators | Cinema & high-end production |
| Power Usage | Lower | Higher |
| Cost per GB | Higher | More affordable |
| Camera Examples | Sony FX3, Sony A7S III | Sony BURANO, Canon EOS C400 |
| Brand Availability | Sony, SanDisk, Lexar, ProGrade, Delkin | SanDisk, Lexar, ProGrade, Delkin, Sony |
Which One Should You Choose?
Choose CFexpress Type A if:
- You shoot with cameras like the Sony FX3 or A7S III
- You want a lightweight, compact setup
- You’re focused on hybrid shooting (photo + video)
You Should Choose CFexpress Type B if:
- You use cinema cameras like the Sony BURANO or Canon EOS C400
- You shoot RAW video, 6K/8K, or high frame rates
- You need maximum speed and buffer performance
Have a browse throughout our growing catalogue of the most popular CFexpress Type A, and CFexpress Type B cards and see the latest live prices from major retailers such as B&H and Amazon.
A Practical Insight Most Beginners Overlook
Your memory card doesn’t improve image quality—it ensures your camera can record data without interruption.
If your card is too slow:
- Video may stop recording
- Frames may drop
- Burst shooting may slow down
That’s why professionals trust brands like SanDisk, Lexar, ProGrade Digital, Delkin, and Sony—they’re known for consistent, reliable performance under pressure.
Final Thoughts
CFexpress Type A and Type B cards aren’t competitors—they’re tools designed for different workflows.
- Type A is all about balance: compact, efficient, and powerful enough for most creators
- Type B is about performance: built for demanding, high-end production
The smartest choice? Match your card to your camera and shooting style. Once you do, your workflow becomes smoother, faster, and far more reliable.