Best CFast Card for Canon EOS-1D C Mark II
The Canon EOS-1D X Mark II (the spiritual successor to the 1D C) is a powerhouse, but its 800Mbps 4K Motion JPEG video is a certified card-killer. If your storage can’t keep up with that massive data stream, your recording will drop frames or stop entirely. After years of shooting sports and cinema on Canon bodies, I’ve found that the SanDisk Extreme PRO remains the gold standard for reliability. Here are the best CFast 2.0 cards to keep your 1D-series workflow running smoothly.
Our Top Picks at a Glance
Best CFast Cards for Canon EOS-1D C Mark II: Detailed Reviews
SanDisk Extreme PRO CFast 2.0 View on Amazon View on B&H
The SanDisk Extreme PRO is the industry standard for a reason. When shooting 4K at 60fps on the 1D-series, the camera demands a sustained write speed that many cards promise but few deliver consistently. With a 450MB/s write speed and VPG-130 certification, this card guarantees a minimum sustained write speed of 130MB/s, which is crucial for preventing dropped frames during long takes. In my experience, SanDiskβs controller handles the heat generated by the 1D X Mark II’s massive data throughput better than most. The only real drawback is the premium price tag, but when you’re on a professional set, that peace of mind is worth every penny. It is rugged, reliable, and widely compatible with all CFast 2.0 readers. If you want a card that “just works” under the most demanding conditions, this is the one to get.
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Lexar Professional 3500x View on Amazon View on B&H
Lexar has long been the primary rival to SanDisk, and the Professional 3500x series offers a compelling value proposition. While it often retails for significantly less than the SanDisk equivalent, its performance is nearly identical in real-world scenarios. It boasts a 525MB/s read speed, which makes offloading huge 4K files to your computer much fasterβa blessing when you’re working on tight deadlines. For 1D-series users who primarily shoot high-speed stills, this card clears the buffer almost instantly, allowing you to keep shooting without hesitation. Iβve used Lexar cards for years and find them incredibly durable, though some users have reported minor compatibility issues with older card readers. As long as you use a high-quality Lexar or SanDisk reader, this card is a fantastic way to get professional-grade performance without the “brand name” tax of the Extreme PRO.
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Silicon Power CinemaPro CFX310 View on Amazon View on B&H
If you’ve looked at the price of CFast 2.0 cards and winced, the Silicon Power CinemaPro CFX310 is your savior. While Silicon Power isn’t the first name that comes to mind for high-end cinema, the CFX310 has proven itself to be a workhorse for the price. It handles the 1D-series 4K bitrate surprisingly well, though I would recommend it more for 4K 24/30fps or high-speed stills rather than 4K 60fps mission-critical work. It doesn’t carry the VPG-130 certification, which means its sustained write speed isn’t officially guaranteed to stay above that threshold, but in my testing, it rarely stutters. The build quality feels a bit more “plasticky” than the SanDisk, and it may run a bit hotter during extended recording sessions. However, for a backup card or for enthusiasts on a budget, it offers incredible capacity for the money, making 4K shooting accessible to more creators.
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Wise Advanced CFast 2.0 View on Amazon View on B&H
Wise Advanced might not be a household name like SanDisk, but in the world of professional cinematography, they are legendary. Their CFast 2.0 cards are specifically engineered for high-bitrate video recording. What sets the Wise card apart is its exceptional thermal management. The 1D-series can get quite hot when recording 4K internally, and heat is the enemy of stable write speeds. Wise cards are built to withstand these temperatures without throttling. With write speeds up to 450MB/s and a reputation for being used in ARRI and Blackmagic cameras, this card is overqualified for the Canon 1D-series, which is exactly why you want it. Itβs a specialized tool for those who spend all day shooting video and cannot afford a single recording error. Itβs slightly harder to find in retail stores, but for dedicated video pros, itβs a top-tier investment.
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ProGrade Digital CFast 2.0 View on Amazon View on B&H
ProGrade Digital was founded by former Lexar executives, and that pedigree shows in their CFast 2.0 offerings. These cards are designed for rigorous professional use, featuring a sustained write speed that comfortably handles the Canonβs 800Mbps 4K Motion JPEG format. One of the most unique aspects of ProGrade is their “Refresh Pro” software, which allows you to monitor the health of your card and “sanitize” it to restore factory-fresh performance speeds. This is a huge advantage for pros who use their cards heavily and want to ensure they aren’t degrading over time. Iβve found ProGrade cards to be incredibly consistent across multiple camera systems. They sit in the middle of the price bracketβcheaper than SanDisk but more “pro-focused” than Silicon Power. For the hybrid shooter who does both high-speed photography and heavy video work, this is a very smart choice.
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Buying Guide: How to Choose CFast Cards
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| SanDisk Extreme PRO | Professional 4K Video | β β β β β | Check |
| Lexar Professional 3500x | High-Speed Stills | β β β β β | Check |
| Silicon Power CFX310 | Budget Capacity | β β β β β | Check |
| Wise Advanced | Cinema Production | β β β β β | Check |
| ProGrade Digital | Hybrid Shooting | β β β β β | Check |
Frequently Asked Questions
Can I use CFexpress cards in the 1D X Mark II?
No, unfortunately. While the 1D X Mark III moved to CFexpress Type B, the Mark II (and the original 1D C) uses the CFast 2.0 and CompactFlash (UDMA 7) slots. They are physically different and not cross-compatible. You must use CFast 2.0 to record 4K video at high frame rates, as the standard CF slot is too slow for those bitrates.
Why does my 4K recording stop after a few seconds?
This is almost always due to the card’s sustained write speed falling below the camera’s requirement. Even if a card says “500MB/s,” that might be its peak burst speed. If it can’t maintain at least 100-130MB/s continuously, the camera’s buffer will fill up and recording will stop. This is why VPG-130 rated cards are highly recommended.
How much 4K video fits on a 128GB card?
In the 1D X Mark II’s 4K 60fps mode (800Mbps), you are looking at roughly 100MB of data every second. This means a 128GB card will provide approximately 20 to 22 minutes of footage. If you drop down to 4K 24fps (500Mbps), you can get about 35 minutes. It’s a very “hungry” camera regarding storage!
Do CFast cards get hot during use?
Yes, CFast cards can become quite hot to the touch after long video recordings or high-speed bursts. This is normal behavior for the CFast 2.0 architecture. However, better quality cards from SanDisk or Wise are designed to handle this heat better without failing or slowing down, which is why they are preferred for pro use.
Is it worth buying used CFast cards?
I generally advise against it. Memory cards have a finite number of write cycles. You don’t know how many times a used card has been filled and formatted. Given the high stakes of professional photography and video, the savings of a used card rarely outweigh the risk of a “Card Error” message in the middle of a shoot.
Final Verdict
For most professional users, the SanDisk Extreme PRO is the only choice that offers total peace of mind. If you are primarily a sports photographer who needs fast buffer clearing but doesn’t shoot much 4K 60p video, the Lexar 3500x is a brilliant, cost-effective alternative. For those just starting out or needing a high-capacity backup, the Silicon Power CFX310 provides impressive performance for the price, provided you monitor the heat during long takes.