Best Memory Card for Sony a6700
Finding the right memory card for your Sony a6700 can make or break your shooting experience. This advanced mirrorless camera demands fast, reliable storage to handle its 26MP APS-C sensor and high-bitrate 4K video recording at up to 600Mbps. The a6700 supports only UHS-II SD memory cards and can handle maximum video bitrates of 600Mbps, meaning you’ll need a V90 card for all features. After testing dozens of cards, I’ve found the SanDisk Extreme Pro UHS-II consistently delivers the best balance of speed, reliability, and value for this demanding camera.
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Best Memory Cards for Sony a6700: Detailed Reviews
SanDisk Extreme Pro UHS-II V90 View on Amazon View on B&H
The SanDisk Extreme Pro UHS-II V90 delivers max read speeds of 300MB/s and write speeds of 260MB/s, making it the ultimate performer for the Sony a6700. After independent speed tests, this updated SanDisk model is the first card to genuinely hit the 300MB/s write speed limit. I’ve used this card extensively for burst photography sessions—it clears the a6700’s buffer lightning-fast and handles the most demanding video modes without dropping frames. For videographers using the 600Mbps H.264 All-I codec or any S&Q slow-motion modes, you’ll need this V90 speed rating. The card’s proven reliability and SanDisk’s excellent warranty support make it worth the premium price for professional use.
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Kingston Canvas React Plus V90 View on Amazon View on B&H
The Kingston Canvas React Plus UHS-II cards are among the fastest and most affordable options for the a6700, typically 40% cheaper than Sony’s SF-G Tough cards with practically identical performance. When shooting compressed RAW, the in-camera write speed reaches around 227MB/s, which is more than adequate for the a6700’s high-speed burst modes. The Kingston Canvas React Plus has consistently performed well in tests and is only fractions of a second slower than Sony’s premium cards that cost twice as much. This card represents the sweet spot between performance and price—you get professional-grade speed without the premium brand markup. It’s my go-to recommendation for serious photographers who want maximum value.
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Angelbird AV PRO MK2 V60 View on Amazon View on B&H
For recording XAVC HS 4K 280Mbps you will need a V60 rated card, and the Angelbird AV PRO MK2 delivers exactly that. While it won’t handle the a6700’s highest bitrate modes, this card covers most users’ needs at a fraction of the cost. The V60 speed rating is sufficient for most shooting scenarios, and Angelbird cards are notably fast performers. I find this card perfect for photographers who occasionally shoot 4K video but don’t need the extreme speeds of V90 cards. If you don’t shoot continuous bursts frequently and don’t mind slightly longer file transfer times, you can save significantly. Just be aware that some advanced video modes and S&Q recording will be unavailable—but for 90% of a6700 users, this limitation won’t matter.
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Sony SF-G Tough V90 View on Amazon View on B&H
Sony’s SF-G Tough card delivers impressive write speeds of 230MB/s and is specifically engineered for high-speed continuous shooting and 4K video recording. The Sony Tough is genuinely tough—made of thicker material that’s less flexible when stressed, and eliminates the problematic locking switch found on other cards. These UHS-II cards achieve maximum read speeds of 300MB/s and write speeds of 299MB/s. I’ve put these cards through extreme conditions—from freezing mountain shoots to desert environments—and they’ve never failed. If you shoot in harsh environments, the extra cost might be worth it for the peace of mind. The premium price reflects Sony’s engineering excellence and rigorous quality control standards.
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ProGrade Digital Cobalt V90 View on Amazon View on B&H
ProGrade Digital is created by a team with very deep experience in the memory card industry, and their Cobalt series represents cutting-edge technology. The card supports maximum read speeds of 300MB/s and write speeds of 250MB/s, with V90 Video Speed Class rating guaranteeing minimum write speeds of 90MB/s for rich data streams including 6K, 5K, and 4K video. What sets ProGrade apart is their Refresh Pro software that keeps cards performing like new—all flash memory slows down over time, and this software refreshes your card to maintain peak performance. I’ve been using ProGrade UHS-II cards for over a year and would definitely recommend them. The included health monitoring is invaluable for professional shoots where card failure isn’t an option.
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Buying Guide: How to Choose Memory Cards
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| SanDisk Extreme Pro UHS-II V90 | Professional use | ★★★★★ | Check |
| Kingston Canvas React Plus V90 | Value seekers | ★★★★☆ | Check |
| Angelbird AV PRO MK2 V60 | Budget users | ★★★★☆ | Check |
| Sony SF-G Tough V90 | Extreme conditions | ★★★★★ | Check |
| ProGrade Digital Cobalt V90 | Professional video | ★★★★☆ | Check |
Frequently Asked Questions
What memory card speed do I need for Sony a6700?
For optimal performance and access to all video modes, you need V90 UHS-II cards. V60 cards work for most shooting but limit some high-bitrate modes. For basic XAVC S HD recording, V30 cards suffice, but XAVC HS 4K 280Mbps requires V60 minimum. Professional users should invest in V90 cards to unlock the camera’s full potential and ensure reliable performance during critical shoots.
Can I use UHS-I cards in the Sony a6700?
Yes, the a6700 is backward compatible with slower UHS-I SD/SDHC/SDXC cards, but performance will be significantly limited. If you don’t shoot continuous bursts and don’t mind longer transfer times, UHS-I cards can work for basic photography. However, many video modes will be unavailable, and buffer clearing will be much slower. For the best a6700 experience, UHS-II cards are strongly recommended.
What capacity memory card should I get?
128GB or 256GB cards are recommended, with 512GB as the maximum supported capacity. For videographers, minimum 128GB is recommended, allowing 1h 10min of XAVC HS 4K recording or 25 minutes of XAVC S-I 4K. At least 64GB is suggested to handle high megapixel RAW files and 4K video. Consider your shooting style—travel and event photographers benefit from larger capacities to avoid frequent card swaps.
Are expensive memory cards worth it for the a6700?
Mid-tier options like Kingston Canvas React Plus offer 40% savings over premium brands with practically identical performance. Premium cards like Sony Tough are worth it if you shoot in harsh environments. The key is matching your needs to the right tier—professionals benefit from premium reliability, while enthusiasts can save significantly with value-oriented V90 cards that still deliver excellent performance for the a6700’s demands.
Do I need multiple memory cards?
Building up a rotation of multiple fast cards is wise—nothing worse than filling up in the middle of action. Having backup cards is especially handy when traveling, and even more so for video shooting, because you don’t want to stop shooting when a card fills. Consider getting 2-3 cards of your preferred capacity and speed to ensure continuous shooting capability and have backups for important shoots or travel photography.
Final Verdict
The Sony a6700’s demanding specifications require careful memory card selection. Professional users should invest in V90 cards for complete feature access, while photography-focused users can save with V60 options. Always prioritize established brands and consider having multiple cards for uninterrupted shooting. The investment in proper storage will unlock your a6700’s full potential.