Best SD Cards For Sony A7 IV
Expert recommendations based on Sony a7 III specifications
Recommended Spec
Slot 1: SD UHS-II, Slot 2: SD UHS-I (V30 or faster)
The a7 III's slot 1 is UHS-II and slot 2 is UHS-I. A U3/V30 card covers 4K at 100 Mbps; put a UHS-II card in slot 1 to clear bursts faster.
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#1 Top Pick for Sony a7 III
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Official Sony a7 III SD Card Requirements
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Format: Slot 1: SD UHS-II, Slot 2: SD UHS-I
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Minimum Speed: V30 (30 MB/s write)
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Maximum Capacity: No official limit (512GB+ tested)
Why these requirements? The a7 III has dual slots, but only Slot 1 is the faster UHS-II. A V30 card is needed for 4K video. For fastest burst shooting and buffer clearing, use a V60 or V90 UHS-II card in Slot 1.
Detailed Specifications
Type
Slot 1: SD UHS-II, Slot 2: SD UHS-I
Min Speed Class
V30
Write Speed
30 MB/s
Recommended Size
128GB, 256GB
Max Capacity
No official limit (512GB+ tested)
Top SD Card Recommendations
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| SD Card | Verified | Speed Class | Write Speed | Pros | Price |
|---|---|---|---|---|---|
SanDisk Extreme PRO SD UHS-II
|
V90 | Up to 260 MB/s |
|
$$ Check Price | |
Lexar Professional 1667x SD
Full Review
|
V60 | Up to 120 MB/s |
|
$ Check Price |
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SanDisk Extreme PRO SD UHS-II
$$ · Premium- UHS RatingUHS-II
- Speed ClassV90
- App PerformanceN/A
- Read SpeedUp to 300 MB/s
- Write SpeedUp to 260 MB/s
- EnduranceStandard
Available Capacities32GB, 64GB, 128GB, 256GB, 512GB
Pros
- V90 UHS-II card for high-bitrate video and fast bursts.
Cons
- High cost per GB.
recommended
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Lexar Professional 1667x SD
$ · Mid-Range- UHS RatingUHS-II
- Speed ClassV60
- App PerformanceN/A
- Read SpeedUp to 250 MB/s
- Write SpeedUp to 120 MB/s
- EnduranceStandard
Available Capacities64GB, 128GB, 256GB
Pros
- Low-cost way into UHS-II SD.
Cons
- V60
- not V90. Too slow for All-Intra 4K.
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Lexar Professional 1667x SD
The Lexar Professional 1667x Silver is a V60 UHS-II SD card that reads up to 250 MB/s and writes up to 120 MB/s. It covers most 4K modes and clears bursts faster than UHS-I, but All-Intra video needs V90.
Target User:
Content creators with a tight budget, amateur videographers
Best For:
Action Cameras, Smartphones & Tablets, Mirrorless Cameras, DSLR Cameras
For more demanding professionals, consider upgrading to a faster UHS-II SD card. In comparison, other popular options like SanDisk Extreme may offer slight speed improvements but at a higher cost. If budget is not a concern, the faster speed may be worth the investment, but for those on a tighter budget, Lexar Professional 1667x Silver SD provides a cost-effective solution.
Special Recommendation
Gigastone 128GB SD Card 4K Camera Pro
Great Value 4K
V30 •
Up to 100 MB/s read •
Up to 30 MB/s (V30 minimum sustained) write
100MB/s read speed. A1 app performance for shooting RAW+JPEG. Includes mini case. 5-year data recovery service.
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Kingston Canvas Go Plus 128GB microSD Card | Up to 200MB/s | Class 10, UHS-I, U3, V30, A2 | SDCG4/128GB
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Kingston 128GB Canvas Select Plus microSD Card | Up to 150MB/s | Class 10, UHS-I, U1, V10, A1 | SDCS3/128GB
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Frequently Asked Questions
What SD Card Do I Need for Sony a7 III?
The Sony a7 III takes a Slot 1: SD UHS-II, Slot 2: SD UHS-I card rated V30 or faster. 128GB or 256GB covers most owners, and the maximum is No official limit (512GB+ tested). Buy SanDisk, Lexar, Samsung or Kingston from a reputable seller: counterfeit cards are the most common cause of lost files.
What is the difference between the two card slots on the Sony a7 III?
Slot 1 supports faster UHS-II cards, while Slot 2 is limited to slower UHS-I speeds. For best performance, use your fastest (UHS-II) card in Slot 1 for primary recording or 4K video, and a reliable UHS-I card in Slot 2 for backup or JPEGs.
Is V30 required for Sony a7 III?
Yes. V30 guarantees 30 MB/s of sustained write, which keeps the Sony a7 III free of dropped frames, clips that stop early, or corrupted files. Faster cards work too.
What size SD card should I get for Sony a7 III?
128GB covers light use; 256GB suits heavy use. Maximum capacity: No official limit (512GB+ tested).
Can I use older or slower cards with Sony a7 III?
Not below V30. Slower cards cause dropped frames, clips that stop early, or corrupted files. Check the card label for the V30 mark.
Does the card type matter for Sony a7 III?
The Sony a7 III accepts Slot 1: SD UHS-II, Slot 2: SD UHS-I. Choose by speed class and capacity; the device's limits are the same for each.
Should I use more than one card with Sony a7 III?
For long shoots, yes. Two mid-size cards cost about the same as one large card, and a failure then loses half your files instead of all of them.
Does the brand matter for Sony a7 III?
Yes. SanDisk, Lexar, Samsung and Kingston cards meet their rated speeds. Buy from the brand's store or a major retailer: counterfeit cards sold under those names are common on marketplaces.
What happens if I use the wrong card with Sony a7 III?
A card slower than V30 causes dropped frames, clips that stop early, or corrupted files. A card over the maximum capacity or in the wrong format may not be recognized.
How long will an SD card last in Sony a7 III?
Several years in normal use. Cards usually fail from wear or counterfeit flash, not age. Replace yours at the first write error, corrupted file or "card not recognized" message.