Most people building a video setup spend a lot of time researching cameras, lenses, and lighting — and then grab a memory card at the last minute based on price and storage size. That is usually where the problems start.
Your recording media has to keep up with your camera in real time. If it cannot, you will get dropped frames, recording errors, or a full stop mid-shoot. The format you need depends on your camera model, your recording codec, and your workflow — not just what fits in the slot.
This guide breaks down the four main formats — CFexpress Type B, SDXC, CFast 2.0, and SSD — so you can make the right call before you buy.
Why the Wrong Card Causes Problems
Every recording format has a data rate — the amount of data your camera writes per second. A card that cannot sustain that write speed will fail. Some cameras throw an error. Others drop frames silently. You may not find out until you're reviewing footage after the shoot.
This gets more critical as resolution and frame rate go up. A card that handles 1080p fine may not be suitable for higher-bitrate 4K, 4K 10-bit, or RAW workflows. And for long-form events — church services, conferences, concerts — you also need enough capacity to run for hours without swapping media.
The Four Formats Explained
CFexpress Type B — One of the fastest card formats used in professional camera workflows today. Uses a PCIe/NVMe interface — the same technology inside fast computer SSDs. Required for high-bitrate RAW recording on cinema and high-end mirrorless cameras. CFexpress 4.0 cards (like OWC Atlas Ultra and Glyph Capture+) offer roughly double the speed of older 2.0 cards. Best for Blackmagic Design Cinema 6K, Canon R5, Nikon Z9, and similar cameras.
SDXC — The most common format across mirrorless, hybrid, and camcorder setups. Not all SD cards are equal, so always check your camera's required speed class, bitrate, and approved media list. Many standard photo and 4K video workflows can use SDXC UHS-I or UHS-II cards, while higher-bitrate 4K, 10-bit, all-intra, and high-frame-rate modes may require faster V60 or V90 UHS-II cards. UHS-II cards can deliver faster performance, but require a UHS-II slot and reader to reach full transfer speed.
CFast 2.0 — A SATA-based format used in select cinema cameras like the Blackmagic Design URSA and Canon C300 II / C200. Faster than SD but slower than CFexpress. If your camera requires it, compatibility is more restrictive than SD — always use approved media and check your camera's manual.
SSD Recording — Used with external monitor/recorders like the Atomos Ninja, Shogun, and Blackmagic Design Video Assist. Instead of recording to a card inside the camera, footage goes directly to an SSD. Great for long events because capacity is much higher. The AtomX SSDmini is purpose-built for Atomos recorders. For Blackmagic Design Video Assist, any fast USB-C SSD works — but cable quality matters.
Pick Your Format
Find your camera or setup in the table below to see what you need and where to shop.
| Your Camera / Setup | What You Need | Shop |
|---|---|---|
| Mirrorless, hybrid camera, standard 4K / photo-video use | SDXC UHS-I or UHS-II, U3 / V30 or higher | Shop SDXC Cards → |
| Mirrorless, 4K 10-bit / high frame rate / high-bitrate modes | SDXC UHS-II V60 or V90, depending on camera requirements | Shop SDXC Cards → |
| Blackmagic Design Cinema 6K, Canon R5, Nikon Z9 | CFexpress Type B | Shop CFexpress Cards → |
| Blackmagic Design URSA, Canon C300 II / C200 | CFast 2.0 | Shop CFast Cards → |
| Atomos Ninja V, V+, Shogun | AtomX SSDmini or compatible SSD media | Sony 500GB AtomX SSDmini · Browse All Atomos → |
| Blackmagic Design Video Assist | SSD via USB-C | Video Assist 5" · Video Assist 7" |
| Long events (3+ hours) | SSD-based recorder | Atomos Shogun Classic · Blackmagic Design Video Assist |
| Fast post-production offload | CFexpress Type B + fast reader | Blackmagic Design MultiDock 10G · Shop Memory Cards → |
A Note on Prices in 2026
⚠️ Heads up: Memory card and flash storage prices have been under pressure in 2026, with several manufacturers announcing price increases tied to NAND flash supply constraints and increased AI data center demand. If you rely on specific cards or drives for production, it may be worth planning your media purchases earlier instead of waiting until right before a shoot.
Before You Buy: 5 Quick Checks
-
Does your camera support this media type?
Check the manual or manufacturer's approved media list before purchasing. -
Is the sustained write speed high enough?
Match it to your codec's data rate — not just the read speed on the box. -
Do you have enough capacity?
Calculate hours of footage at your codec and resolution, then add buffer. -
Can you offload fast enough?
A fast card needs a matching reader. Using the wrong one will bottleneck your entire transfer workflow.- UHS-II SD reader: Angelbird PKT SD Reader
- CFexpress Type B reader: Angelbird CFXBCRP Performance CFexpress B Card Reader · Sony MRWG1 CFexpress Reader
- CFast 2.0 reader: SanDisk PRO-READER CFast Card Reader
- CFexpress + SD combo reader: Delkin CFexpress B + SD UHS-II Reader
-
Have you tested it?
Record a full-settings test clip before any paid production.
Final Takeaway: Choose the Right Media, Then Complete the Workflow
The right recording media is not always the biggest card or the cheapest drive. It depends on your camera, recording format, bitrate, shooting length, and how quickly you need to move footage into post-production.
For standard mirrorless and creator workflows, a properly rated SDXC card may be enough. For high-bitrate 4K, 6K, 8K, RAW, and demanding cinema workflows, CFexpress Type B or CFast 2.0 may be required depending on your camera. For long events, external monitor/recorder setups, and production environments where larger capacity matters, SSD recording can be the better choice.
Before buying, always confirm three things: your device supports the media type, the sustained write speed matches your recording format, and your reader, cable, or dock can keep up during offload. A reliable media workflow helps protect your footage from capture to edit.
To complete your setup, explore recording media and related video production gear at AVLGEAR:
- Shop All Memory Cards
- Shop Blackmagic Design
- Shop Recorder Accessories
- Shop Video Production Gear
- Shop Video Cables
- Shop Storage Devices
For more product options or help choosing the right recording media for your camera, recorder, or production workflow, visit AVLGEAR.com.