Best SD Cards For Canon EOS R6 Mark II
Expert recommendations based on Sony A7 IV specifications
Recommended SD Card
CFexpress Type A or SD UHS-II (V60 (V90 for S&Q modes) or faster)
The A7 IV records high-bitrate 4K video.
Official Sony A7 IV SD Card Requirements
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Format: CFexpress Type A or SD UHS-II
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Minimum Speed: V60 (V90 for S&Q modes) (60 MB/s write)
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Maximum Capacity: Up to No official limit
Why these requirements? The A7 IV records high-bitrate 4K video. Slot 1 accepts ultra-fast CFexpress Type A cards or SD cards, while Slot 2 is SD-only. A V60 SD card is needed for most 4K modes, while V90 is required for the highest quality S&Q (Slow & Quick) recording to prevent buffer issues.
Detailed Specifications
Type
CFexpress Type A or SD UHS-II
Min Speed Class
V60 (V90 for S&Q modes)
Write Speed
60 MB/s
Recommended Size
128GB, 256GB
Max Capacity
No official limit (1TB tested)
Top SD Card Recommendations
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| SD Card | Speed Class | Write Speed | Pros | Price |
|---|---|---|---|---|
Lexar Professional 1667x Silver SD (Legacy ID)
|
V60 | Up to 120 MB/s |
|
$ Check Price |
Featured Products on Amazon
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Frequently Asked Questions
What SD Card Do I Need for Sony A7 IV?
The Sony A7 IV requires a CFexpress Type A or SD UHS-II card with V60 (V90 for S&Q modes) speed rating for reliable performance. We recommend 256GB capacity as the sweet spot balancing storage capacity with affordability. The device supports up to No official limit, though most users find 256GB sufficient for daily use. Always choose from trusted brands like SanDisk, Lexar, or Kingston to ensure consistent performance and avoid data loss.
Do I need a CFexpress Type A card for the Sony A7 IV?
No, it's not required for most shooting. A V60 or V90 SD UHS-II card is sufficient for almost all video modes. CFexpress Type A is only necessary for clearing the buffer faster during intense burst photography or for the absolute highest video bitrates.
What is the difference between the two card slots?
Slot 1 is a combo slot that fits either one CFexpress Type A card or one SD card (UHS-I/II). Slot 2 only fits one SD card (UHS-I/II). You can use both for simultaneous backup or relay recording.
Is V60 required for Sony A7 IV?
Yes, V60 is recommended for Sony A7 IV. It guarantees a minimum sustained write speed of 60 MB/s, which is necessary for stable professional recording without dropped frames or errors.
What storage capacity should I get for Sony A7 IV?
We recommend 128GB or 256GB cards. A 128GB card is good for typical use, with No official limit as the maximum supported capacity (1TB tested and verified working). Larger sizes are useful if you shoot frequently and want to minimize card swaps.
Can I use older or slower cards with Sony A7 IV?
Not recommended. Cards slower than V60 (V90 for S&Q modes) may cause dropped frames, corrupted files, or recording failures. Always use V60 (V90 for S&Q modes) minimum for reliability.
Do I need a UHS card for Sony A7 IV?
UHS cards are recommended for best performance with Sony A7 IV. Non-UHS cards will work but may have slower transfer speeds. For this device, UHS-II is optimal.
Should I use more than one card with Sony A7 IV?
For professional use or extended shooting sessions, dual cards provide redundancy and backup. Using multiple cards ensures you won't lose footage if one card fails. This is especially important for valuable recordings.
Does the brand matter for Sony A7 IV?
Yes, trusted brands like SanDisk, Lexar, and Kingston are recommended. Quality brands have better reliability and warranty support. Avoid unknown brands, especially for demanding devices.
What happens if I use the wrong card with Sony A7 IV?
Using cards slower than V60 (V90 for S&Q modes) can cause: dropped frames during recording, corrupted files, or complete recording failure. Stick to V60 (V90 for S&Q modes) minimum to avoid data loss.
How long will an SD card last with Sony A7 IV?
Quality SD cards typically last 3-5 years with normal use. Replace your card if you experience read/write errors, corrupted files, or if it's been dropped or exposed to extreme conditions.