Best SD Card for Canon EOS M20
Finding the right SD card for your Canon EOS M20 shouldn’t feel like a technical chore, but a slow card can ruin a great shoot. Whether you’re hitting the buffer during burst shots or seeing your 4K video cut out unexpectedly, the memory card is often the silent culprit. I’ve spent years testing storage in Canon’s mirrorless lineup, and for the M20, the SanDisk Extreme Pro remains the gold standard for reliability. Let’s dive into the best options available today.
Our Top Picks at a Glance
Best SD Card for Canon EOS M20: Detailed Reviews
SanDisk Extreme Pro UHS-I View on Amazon View on B&H
The SanDisk Extreme Pro is the industry standard for a reason. While the Canon EOS M20 utilizes a UHS-I slot, this card maximizes that potential with read speeds up to 200MB/s and write speeds of 90MB/s. In my experience, this is the most consistent card for handling Canon’s 4K video bitrate without dropped frames. When shooting RAW bursts of moving subjects, the buffer clears noticeably faster than with generic cards. It is shockproof, temperature-proof, and waterproof, which provides peace of mind when shooting outdoors. The only minor drawback is that you need a proprietary SanDisk reader to hit that full 200MB/s speed on your computer, but even with a standard reader, it’s incredibly fast. For the M20, there is simply no more reliable choice for both enthusiasts and daily shooters who want to ensure their memories are safely written to disk every single time.
Check Price on Amazon → Check Price on B&H
✓ Free Shipping · ✓ Easy Returns · ✓ Secure Checkout
Samsung EVO Select View on Amazon View on B&H
If you don’t want to spend a fortune but need a card that won’t fail you, the Samsung EVO Select is my top recommendation. It frequently goes on sale and offers performance that punches way above its weight class. With 130MB/s read speeds, it handles the Canon EOS M20’s Full HD video and standard JPEG photography effortlessly. I find this card particularly great for travel because Samsung’s 6-proof protection makes it incredibly durable against magnetic fields and X-rays at airport security. While it is V30 rated for 4K video, it can occasionally feel a hair slower than the SanDisk when clearing a long burst of RAW files. However, for the average hobbyist shooting family vacations or street photography, the price-to-performance ratio is unbeatable. It is a workhorse card that proves you don’t always have to pay a premium for high-quality storage and data integrity.
Check Price on Amazon → Check Price on B&H
✓ Free Shipping · ✓ Easy Returns · ✓ Secure Checkout
Lexar High-Performance 800x View on Amazon View on B&H
For those on a strict budget or looking for a secondary backup card, the Lexar 800x is a surprisingly capable entry. It provides a 120MB/s read speed, which is plenty for the Canon EOS M20’s primary functions. I’ve used Lexar cards for years, and while they had some branding transitions recently, the 800x series remains a reliable choice for casual photography. It handles JPEGs like a champ and is more than adequate for 1080p video recording. The main limitation is the write speed during heavy continuous shooting; if you are trying to capture a fast-paced sports event in RAW, you will notice the camera “thinking” for a few seconds as the buffer clears. However, for portraits, landscapes, and everyday snapshots, you likely won’t notice the difference between this and much more expensive cards. It’s a smart way to save money that you can put toward your next lens instead.
Check Price on Amazon → Check Price on B&H
✓ Free Shipping · ✓ Easy Returns · ✓ Secure Checkout
Kingston Canvas Go! Plus View on Amazon View on B&H
The Kingston Canvas Go! Plus is a high-tier UHS-I card that often gets overlooked but performs beautifully in the Canon EOS M20. It boasts read speeds of up to 170MB/s and write speeds that easily sustain 4K UHD video recording. What I love about Kingston is their rigorous testing; these cards are built for adventurers and vloggers who might find themselves in harsh environments. I’ve found that the Canvas Go! Plus runs slightly cooler than some competitors during long 4K recording sessions, which can help prevent the camera from overheating in warm weather. It carries the V30 speed class rating, ensuring that the minimum write speed never dips below 30MB/s. If you are a content creator who relies on your M20 for YouTube or social media video, the extra reliability and speed of the Kingston make it a worthwhile investment for professional-level results.
Check Price on Amazon → Check Price on B&H
✓ Free Shipping · ✓ Easy Returns · ✓ Secure Checkout
PNY Elite-X V30 View on Amazon View on B&H
The PNY Elite-X is a fantastic alternative that often wins on availability and consistent performance. I particularly like PNY cards for their longevity; they seem to handle thousands of rewrite cycles without the common “card error” messages that plague cheaper generic brands. It offers 100MB/s read speeds, which is more than enough for the Canon EOS M20. While it might not have the flashy 200MB/s marketing specs of the SanDisk, it provides a stable V30 write speed that makes it perfect for long-form video recording. If you find yourself shooting events where you need to leave the camera running, the Elite-X is a trustworthy partner. It is also quite sturdy, resisting the physical wear and tear of being frequently swapped in and out of the camera. It’s a solid, no-nonsense choice for photographers who value stability and proven hardware over maximum theoretical speed.
Check Price on Amazon → Check Price on B&H
✓ Free Shipping · ✓ Easy Returns · ✓ Secure Checkout
Buying Guide: How to Choose an SD Card for Canon EOS M20
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| SanDisk Extreme Pro | 4K & Burst | ★★★★★ | Check |
| Samsung EVO Select | Travel | ★★★★☆ | Check |
| Lexar 800x | Beginners | ★★★★☆ | Check |
| Kingston Canvas Go! | Vlogging | ★★★★★ | Check |
| PNY Elite-X | Stability | ★★★★☆ | Check |
Frequently Asked Questions
Does the Canon EOS M20 support UHS-II cards?
Yes, the Canon EOS M20 is backwards compatible with UHS-II cards, meaning they will fit and function perfectly fine in the camera. However, because the M20 lacks the second row of internal pins required for UHS-II speeds, it will only operate at UHS-I speeds. You won’t see any performance gain during shooting or while the camera writes to the buffer. The only real benefit is faster file transfers to your computer if you use a UHS-II card reader.
How many 4K videos can a 128GB card hold on the M20?
On a 128GB card, you can typically expect to store roughly 2 to 3 hours of 4K video footage, depending on the frame rate and level of detail in your scenes. 4K files are significantly larger than Full HD, consuming about 120MB per minute of footage. If you are also shooting RAW photos alongside video, that space will disappear much faster. I always suggest 128GB as the starting point for anyone planning to use the 4K video features regularly.
Why does my camera say “Card Error” or “Full” when it isn’t?
This is often a sign of file system corruption or a failing card. First, try formatting the card using the M20’s internal menu (Low-Level Format) rather than your computer. If the error persists, the card’s internal controller might be failing. Heat can also cause temporary errors during long video shoots. If you see this message frequently with a specific card, it is time to retire it immediately. Losing your photos is never worth the price of a replacement card.
Is there a limit to the SD card capacity for the M20?
The Canon EOS M20 supports the SDXC (Secure Digital eXtended Capacity) standard, which theoretically allows for cards up to 2TB. In the real world, 256GB and 512GB cards work perfectly fine in this camera. I personally prefer using two 128GB cards rather than one massive 512GB card. This “don’t put all your eggs in one basket” approach ensures that if one card fails or gets lost, you still have half of your day’s work on the other.
Can I use a MicroSD card with an adapter in my M20?
You can use a MicroSD card with an adapter, and many people do this to save money or share cards with their drones or phones. However, the adapter adds another point of failure. The physical pins can sometimes lose contact, causing “Card Removed” errors mid-shoot. For the most reliable experience, especially for important events like weddings or graduations, I strongly recommend using a full-sized SD card. They are more durable and specifically designed for the high-speed demands of mirrorless cameras.
Final Verdict
For the Canon EOS M20, your choice depends on your shooting style. If you plan on pushing the camera to its limits with 4K video and high-speed RAW bursts, the SanDisk Extreme Pro is the only card I fully trust. For casual users who want a reliable card for family photos without breaking the bank, the Samsung EVO Select is a fantastic value. Regardless of your choice, stick to 128GB for the best balance of storage and cost.