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Sony A6700 SD card requirements

Best SD Card for Sony A6700

Expert recommendations based on Sony A6700 specifications

Recommended Spec

SD UHS-II (V30 (V90 for XAVC S-I) or faster)

The A6700 has one SD UHS-II slot. V30 covers XAVC S up to 140 Mbps, V60 covers XAVC HS at 200 Mbps, and XAVC S-I at up to 600 Mbps needs V90.

Official Sony A6700 SD Card Requirements

  • Format: SD UHS-II
  • Minimum Speed: V30 (V90 for XAVC S-I) (30 MB/s write)
  • Maximum Capacity: Up to 512GB
Why these requirements? Sony ties card speed to codec. XAVC S (up to 140 Mbps) needs V30, XAVC HS (up to 200 Mbps) needs V60, and XAVC S-I All-Intra (up to 600 Mbps at 4K60) needs V90. The A6700 has a single SD UHS-II slot and no backup slot.

Real-World Evidence

  • In independent in-camera benchmark testing across 35 cards on the A6700, the PNY EliteX-Pro90 V90 was the fastest measured at around 220 MB/s write, ahead of the OWC Atlas Ultra V90 (217 MB/s) and Wise V90 Pro (214 MB/s). V60 cards trailed well behind, topping out around 170 MB/s. Source: Alik Griffin (independently corroborated on DPReview forums)

Detailed Specifications

Type
SD UHS-II
Min Speed Class
V30 (V90 for XAVC S-I)
Write Speed
30 MB/s
Recommended Size
128GB, 256GB
Max Capacity
512GB

Top SD Card Recommendations

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SD Card Verified Speed Class Write Speed Pros Price
SanDisk Extreme PRO SD UHS-II V90 SD card - 100USD
SanDisk Extreme PRO SD UHS-II
 		V90 Up to 260 MB/s
  • V90 UHS-II card for high-bitrate video and fast bursts.
 $$ Check Price
Lexar Professional Silver SD V30 SD card - 20USD
Lexar Professional Silver SD
 Full Review 		V30 Up to 120 MB/s
  • V30 SD card with 120 MB/s writes at a mid-range price.
 $ Check Price
Kingston Canvas Go! Plus SD V30 SD card - 45USD
Kingston Canvas Go! Plus SD
 		V30 Up to 90 MB/s
  • Fast UHS-I SD card with 90 MB/s writes.
 $ Check Price

Compare These Cards

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See how the recommended cards for Sony A6700 stack up side by side, or swap in any other card.

professional
SanDisk Extreme PRO SD UHS-II

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.
View on Amazon
recommended
Lexar Professional Silver SD

Lexar Professional Silver SD

 $ · Mid-Range
  • UHS RatingUHS-I
  • Speed ClassV30
  • App PerformanceN/A
  • Read SpeedUp to 160 MB/s
  • Write SpeedUp to 120 MB/s
  • EnduranceStandard
Available Capacities64GB, 128GB, 256GB

Pros

  • V30 SD card with 120 MB/s writes at a mid-range price.

Cons

  • Write speed drops once its cache fills during long bursts.
View on Amazon
recommended
Kingston Canvas Go! Plus SD

Kingston Canvas Go! Plus SD

 $ · Mid-Range
  • UHS RatingUHS-I
  • Speed ClassV30
  • App PerformanceN/A
  • Read SpeedUp to 170 MB/s
  • Write SpeedUp to 90 MB/s
  • EnduranceStandard
Available Capacities64GB, 128GB, 256GB, 512GB

Pros

  • Fast UHS-I SD card with 90 MB/s writes.

Cons

  • Easy to confuse with Kingston's Canvas React line.
View on Amazon

Lexar Professional Silver SD

The Lexar Professional Silver SD reads up to 160 MB/s and writes up to 120 MB/s with a V30 rating. It suits 4K cameras up to about 200 Mbps. The full read speed needs a Lexar reader.

Target User: Content creators, photographers, and videographers on the go
Best For: Action Cameras, Mirrorless Cameras, DSLR Cameras, Smartphones & Tablets

Consider the Samsung Pro X5 or Sony SF-G series for even higher performance, but at a higher price point.

Frequently Asked Questions

What SD Card Do I Need for Sony A6700?
The Sony A6700 takes a SD UHS-II card rated V30 (V90 for XAVC S-I) or faster. 128GB or 256GB covers most owners, and the maximum is 512GB. Buy SanDisk, Lexar, Samsung or Kingston from a reputable seller: counterfeit cards are the most common cause of lost files.
Is V30 enough for 4K 60fps on the Sony A6700?
For XAVC S, yes. XAVC HS at 200 Mbps needs V60, and XAVC S-I at up to 600 Mbps needs V90.
Does the Sony A6700 have two card slots?
No, one SD UHS-II slot. Back up after each shoot, since there is no second card.
Is V30 required for Sony A6700?
Yes. V30 guarantees 30 MB/s of sustained write, which keeps the Sony A6700 free of dropped frames, clips that stop early, or corrupted files. Faster cards work too.
What size SD card should I get for Sony A6700?
128GB covers light use; 256GB suits heavy use. The maximum is 512GB.
Can I use older or slower cards with Sony A6700?
Not below V30 (V90 for XAVC S-I). Slower cards cause dropped frames, clips that stop early, or corrupted files. Check the card label for the V30 (V90 for XAVC S-I) mark.
Do I need a UHS-II card for Sony A6700?
No, but it helps. The Sony A6700 has a UHS-II slot, so UHS-II cards write and offload faster. UHS-I cards work at UHS-I speed.
Should I use more than one card with Sony A6700?
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 A6700?
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 A6700?
A card slower than V30 (V90 for XAVC S-I) 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 A6700?
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.

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