Best SD Cards for Canon EOS M100 Mark II
Finding the right SD card for your Canon EOS M100 Mark II (the M200) is crucial for unlocking its potential. Nothing ruins a photo walk faster than a “buffer full” message while capturing a fleeting moment. While this camera relies on the UHS-I interface, not all cards are created equal. I’ve tested dozens of options to find the perfect balance of speed and reliability, with the SanDisk Extreme Pro standing out as the ultimate choice for most photographers.
Our Top Picks at a Glance
Best SD Cards for Canon EOS M100 Mark II: Detailed Reviews
SanDisk Extreme Pro UHS-I View on Amazon View on B&H
The SanDisk Extreme Pro has long been the gold standard for enthusiasts, and for good reason. In my experience using this card with the M-series, the V30 rating ensures that 4K video recording never stutters, even during long takes. With read speeds reaching up to 200MB/s (with a compatible reader) and write speeds up to 90MB/s, it clears the M100 Mark II’s buffer significantly faster than standard cards. This is particularly noticeable when you’re shooting RAW bursts of a moving subject. The card is also shockproof, temperature-proof, and waterproof, which provides peace of mind when you’re shooting outdoors in unpredictable weather. While it is slightly more expensive than generic brands, the reliability and lifetime warranty make it a “set it and forget it” purchase. The only minor drawback is that to reach the maximum 200MB/s read speed, you need SanDisk’s proprietary card reader, though it remains lightning-fast in-camera regardless.
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Samsung PRO Plus View on Amazon View on B&H
Samsung has aggressively entered the full-size SD card market, and the PRO Plus is a fantastic value proposition for Canon users. Offering read speeds of up to 180MB/s and write speeds of 130MB/s, it actually outperforms many more expensive rivals on paper. When I swapped this into my gear bag, I was impressed by how cool the card stays during extended 4K video sessions—a common pain point with budget storage. It’s a V30, U3 rated card, meaning it meets all the technical requirements for the M100 Mark II’s highest bitrates. The “7-proof” protection covers everything from magnets to X-rays, making it an ideal companion for international travel. If you want high-tier performance without the “brand tax” often associated with older photography names, this is your best bet. The only reason it isn’t “Best Overall” is that SanDisk has a slightly longer track record for long-term data retention in professional circles.
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Lexar Professional 1066x View on Amazon View on B&H
If you’ve just spent your savings on the camera body and a nice lens, the Lexar Professional 1066x (Silver Series) is a life-saver. Despite its entry-level price point, it still provides the V30 video speed class necessary for 4K video on the M100 Mark II. You’ll get write speeds around 70-90MB/s, which is perfectly adequate for standard photography. I find this card particularly useful as a secondary “backup” card to keep in your wallet. While it doesn’t quite match the blistering file transfer speeds of the Samsung or SanDisk when moving photos to your computer, it performs admirably inside the camera. The honest limitation here is the build quality; the plastic casing feels a bit more “brittle” than the premium options, so I wouldn’t recommend it for heavy professional use where cards are being swapped in and out multiple times a day. For the casual weekend shooter, however, it’s a total bargain.
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Kingston Canvas Go! Plus View on Amazon View on B&H
The Kingston Canvas Go! Plus is often overlooked by photographers, but it shouldn’t be. This is a premium UHS-I card that offers 170MB/s read and 90MB/s write speeds, specifically designed for users who are constantly on the move. What sets this card apart is its incredible stability. While some cards can have “spiky” performance where speeds dip during long bursts, the Kingston remains remarkably consistent. I’ve found it exceptional for capturing high-frame-rate action where the camera’s buffer is under constant pressure. It handles the M100 Mark II’s 4K video effortlessly, and its durability ratings are among the best in the industry. It’s a slightly more “pro” feeling card that fits perfectly into a high-performance workflow. If you’re the type of shooter who demands a card that will never fail during a critical shoot, the Kingston Canvas Go! Plus is worth the small premium for that extra peace of mind.
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SanDisk Extreme (Gold) View on Amazon View on B&H
The “regular” SanDisk Extreme (the gold one) sits just below the Pro version and is a stellar choice for the M100 Mark II. It offers 180MB/s read and 90MB/s write speeds, which effectively matches the camera’s internal maximum throughput. In real-world testing, you’ll notice very little difference between this and the Pro version for single shots or short bursts. It’s fully V30 and U3 rated, so you’re still getting the speed required for 4K video. I often recommend this card to friends who want the reliability of SanDisk without the professional price tag. It’s widely available at almost every electronics store, making it a reliable pick-up if you’re traveling and need more storage. While it lacks the extreme durability of the Pro line, it’s still plenty tough for most vacations and family events. It’s the “sensible” choice for anyone who doesn’t feel the need to over-spec their storage.
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Buying Guide: How to Choose the Best SD Card
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| SanDisk Extreme Pro | Professional Reliability | ★★★★★ | Check |
| Samsung PRO Plus | Exceptional Value | ★★★★☆ | Check |
| Lexar Professional 1066x | Tight Budgets | ★★★★☆ | Check |
| Kingston Canvas Go! Plus | Action/Durability | ★★★★★ | Check |
| SanDisk Extreme | General Hobbyist | ★★★★☆ | Check |
Frequently Asked Questions
Can I use a UHS-II card in the Canon M100 Mark II?
Yes, you can physically use UHS-II cards as they are backward compatible with UHS-I slots. However, the camera will only operate at UHS-I speeds because it lacks the internal pins required to utilize the faster UHS-II bus. Since UHS-II cards are significantly more expensive, you are essentially paying for speed that your camera cannot use. I find it better to invest that extra money into a higher capacity UHS-I card or a better lens instead.
What capacity SD card should I buy for 4K video?
For 4K video on the M100 Mark II, I strongly recommend a minimum of 128GB. 4K footage consumes a lot of data quickly, and a 64GB card will often fill up in less than an hour of actual recording time. If you plan on a full day of shooting without a laptop to offload files, 128GB or even 256GB is the safer choice. Always ensure the card is marked SDXC to support these larger file sizes.
Why does my camera stop recording video after a few seconds?
This is almost always due to using an SD card with a slow sustained write speed. If your card isn’t V30 or U3 rated, it can’t keep up with the data stream from the camera’s processor. When the internal buffer fills up because the card is too slow to write the data, the camera simply stops recording. Upgrading to any of the V30-rated cards on our list, like the SanDisk Extreme Pro, will solve this common issue immediately.
How many photos can a 128GB card hold on this camera?
On a 24-megapixel camera like the M100 Mark II, a 128GB card can hold approximately 3,000 to 4,000 RAW files, or over 10,000 high-quality JPEGs. If you shoot in “RAW + JPEG” mode, which I often do to have quick previews, you can expect around 2,500 pairs. This is usually more than enough for a typical week-long vacation, though video will significantly reduce these numbers. It’s always wise to carry a spare card just in case.
Are “Micro SD” cards with adapters okay to use?
While Micro SD cards with adapters work, I generally recommend using full-sized SD cards whenever possible. Every connection point—like the pins between a Micro SD card and its adapter—is a potential point of failure or speed bottleneck. If you already own high-speed Micro SD cards from a drone or GoPro, they will function fine, but if you are buying a new card specifically for your Canon camera, the full-sized versions are typically more robust and reliable for long-term use.
Final Verdict
For the majority of Canon EOS M100 Mark II (M200) users, the SanDisk Extreme Pro is the perfect match, offering rock-solid reliability that professionals trust. If you’re looking to save a few dollars without sacrificing speed, the Samsung PRO Plus is a modern, high-performance alternative that won’t disappoint. Beginners or casual family photographers will find the Lexar Professional 1066x more than adequate for everyday snapshots. No matter which you choose, ensuring you have a V30-rated card is the key to frustration-free shooting.