Best Memory Card for Canon EOS M100 Mark II
Finding the right memory card for your Canon EOS M100 Mark II can feel like a technical minefield, especially when trying to balance 4K video demands with high-speed burst photography. While this compact mirrorless powerhouse is incredibly user-friendly, choosing a slow card will lead to frustrating buffer lags and dropped frames. After testing dozens of SD cards in Canon’s M-series ecosystem, I’ve found that the SanDisk Extreme Pro remains the undisputed champion for reliability and speed.
Our Top Picks at a Glance
Best Memory 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 UHS-I is widely considered the gold standard for mirrorless cameras like the Canon M100 Mark II. With read speeds of up to 200MB/s and write speeds reaching 140MB/s, this card ensures that your camera’s buffer clears almost instantly after a high-speed burst of RAW images. For those diving into 4K video, the V30 and U3 ratings guarantee a minimum sustained write speed that prevents recording from cutting out unexpectedly. I’ve used these cards in extreme weather—from humid rainforests to freezing mountain peaks—and they have never corrupted a single file. While you could technically use a UHS-II card, the M100 Mark II’s single slot is optimized for UHS-I, making this the most efficient choice. The only minor drawback is the slightly higher price point compared to generic brands, but for the peace of mind it provides, it is worth every penny.
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Samsung EVO Select View on Amazon View on B&H
If you want the best “bang for your buck,” the Samsung EVO Select is impossible to beat. Samsung has mastered the art of high-performance storage at consumer-friendly prices. Rated at Grade 3 (U3) and Class 10, it handles the M100 Mark II’s Full HD and 4K video recording with ease. While its write speeds are slightly slower than the SanDisk Extreme Pro, you likely won’t notice a difference unless you are shooting long sequences of continuous RAW frames. The 130MB/s read speed makes transferring a day’s worth of vacation photos to your laptop a breeze. I particularly love the multi-proof protection—it’s waterproof, X-ray proof, and magnetic proof—making it a perfect companion for travel photographers. It’s a reliable workhorse that leaves more room in your budget for lenses or accessories, though professional sports shooters might find the buffer clearing a fraction slower than premium alternatives.
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Kingston Canvas Select Plus View on Amazon View on B&H
Not everyone needs to record high-bitrate 4K or shoot 10 frames per second. If you primarily use your Canon M100 Mark II for capturing family gatherings, school plays, or social media snapshots in JPEG format, the Kingston Canvas Select Plus is your best bet. It is incredibly affordable, often priced significantly lower than its competitors while still offering a lifetime warranty. It is optimized for Android devices and cameras, meaning it handles small file writes efficiently. However, it is important to be honest about its limitations: with a maximum read speed of 100MB/s, it may struggle with 4K video recording if the scene is highly complex. For 1080p video and standard photography, however, it performs admirably. It’s the card I recommend to friends who want a “set and forget” solution without spending a fortune on specs they might never actually utilize in daily shooting.
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Lexar Professional 1066x UHS-I View on Amazon View on B&H
The Lexar Professional 1066x (Silver Series) is designed for those who push their equipment to the limit. If you find yourself frequently using the Canon M100 Mark II’s continuous shooting mode to capture fast action or pets, you’ll appreciate the 120MB/s write speed. This card is specifically engineered to handle the high-speed capture of high-quality images and extended lengths of 4K video. It feels slightly more “pro” in hand and has undergone rigorous testing for durability. I’ve found that Lexar cards often have a slight edge in “recovery” speed—the time it takes for the camera to become responsive again after a massive burst of photos. While more expensive than the Samsung, it’s a premium piece of kit for those who don’t want the card to be the bottleneck in their creative process. It also comes with a downloadable Image Rescue software, which is a lifesaver if you accidentally delete a precious memory.
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PNY Elite-X UHS-I View on Amazon View on B&H
The PNY Elite-X is a fantastic alternative that often flies under the radar. It matches the essential specs needed for the Canon M100 Mark II: U3, V30, and Class 10. In my testing, PNY cards have shown remarkable consistency in their write speeds, meaning you won’t experience those weird “hiccups” where the camera pauses during a video recording. The 100MB/s read speed is standard and perfectly adequate for most users. It’s a great card to keep as a spare in your camera bag or as your primary card if you find it on sale, which it often is. While the brand doesn’t have the same “prestige” as SanDisk, the hardware inside is robust and reliable. It’s a no-nonsense card that does exactly what it says on the tin. If you’re a hobbyist who wants a solid card without the marketing fluff, this PNY model is a superb choice for your mirrorless setup.
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Buying Guide: How to Choose a Memory Card for Your Canon
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| SanDisk Extreme Pro | Professional Reliability | ★★★★★ | Check |
| Samsung EVO Select | Value for Money | ★★★★☆ | Check |
| Kingston Canvas Select | Casual Snapshots | ★★★★☆ | Check |
| Lexar Professional | Burst Photography | ★★★★★ | Check |
| PNY Elite-X | Budget Video | ★★★★☆ | Check |
Frequently Asked Questions
Does the Canon EOS M100 Mark II support UHS-II cards?
Technically, yes, you can physically insert and use a UHS-II card in the M100 Mark II because SD cards are backwards compatible. However, the camera hardware only has one row of pins for the UHS-I bus. This means you will not see any speed benefits while shooting. The only advantage is faster file transfers from the card to your computer if you use a dedicated UHS-II card reader. For most users, high-end UHS-I cards are a better value.
What size memory card should I get for a two-week vacation?
For a two-week trip where you are taking a mix of RAW photos and 4K videos, I highly recommend at least a 128GB card, or preferably two 64GB cards. A 128GB card can hold roughly 4,000 high-resolution RAW images or about 3 to 4 hours of 4K video. Having a second card is always a smart “insurance policy” just in case one card is lost or fails, though modern SD cards from reputable brands are very reliable.
Why does my camera stop recording video after 10 seconds?
This is almost always due to the memory card’s write speed being too slow. The Canon M100 Mark II records video at a specific bitrate, and if the card cannot “keep up” with writing that data, the camera’s internal buffer overflows and stops the recording to protect the data. To fix this, ensure your card has a “V30” or “U3” symbol on the front, which guarantees a sustained write speed of at least 30MB/s.
Is it better to have one large card or several small ones?
This is a classic debate among photographers! One large 256GB card is convenient because you never have to open the battery door and swap cards. However, if that single card fails or gets lost, you lose everything. Many pros prefer two 128GB cards. This “don’t put all your eggs in one basket” approach is safer for once-in-a-lifetime events like weddings or expensive vacations. Personally, I find 128GB to be the perfect middle ground for usability.
How often should I format my memory card?
You should format your memory card every time you have successfully transferred your photos to your computer and backed them up. However, you should always format the card *inside* the Canon M100 Mark II rather than on your computer. This ensures the card’s file structure is perfectly aligned with the camera’s operating system, which significantly reduces the risk of file corruption and “Card Error” messages during a shoot. It only takes a few seconds!
Final Verdict
For most users, the SanDisk Extreme Pro is the only card you’ll ever need, offering the perfect blend of speed for 4K video and reliability for long-term use. If you are a casual shooter looking to save money, the Samsung EVO Select provides nearly identical performance for a fraction of the cost. Always prioritize a V30 rating if you plan on recording video, as this ensures your M100 Mark II can perform at its absolute best without technical interruptions.