Best Memory Cards for Sony a7C II
The Sony a7C II (ILCE-7CM2) is a 33 MP full-frame body with one SD slot — UHS-I/II, no CFexpress Type A. Sony’s own card table asks for V90 only when you record XAVC S-I 4K at 600 Mbps; Long GOP 4K tops out at 200 Mbps on U3. There is no second slot to overflow to. For most people on this camera, the card is the Sony SF-G Tough V90.
Our Top Picks at a Glance
Reviewed September 2026 · ILCE-7CM2 · 33 MP · single SD UHS-II · S-I 4K 600 Mbps → V90 · 4K 60p Super 35 only
UHS-II V90, 300/299 MB/s, IP68 one-piece body. The 256 GB SKU is the one-slot travel default.
Check Price at Amazon Read full review ↓Same V90 class, 300/260 MB/s, up to 256 GB. S-I unlocked without the Sony Tough price.
Check Price at Amazon Read full review ↓UHS-II V60, 277/150 MB/s. Covers Long GOP 4K, proxy, and S&Q. Not S-I.
Check Price at Amazon Read full review ↓This page contains affiliate links. A purchase through those links may earn Cameraegg a commission at no extra cost to you.
Comparison Table
| Card | Bus / class | Rated speed | a7C II job | Buy |
|---|---|---|---|---|
| Sony SF-G Tough | UHS-II V90 | 300 / 299 MB/s | S-I 4K 600 Mbps + travel | Check price |
| Kingston Canvas React Plus | UHS-II V90 | 300 / 260 MB/s | Same S-I class, cheaper | Check price |
| Sony SF-M Series | UHS-II V60 | 277 / 150 MB/s | Long GOP + proxy / S&Q | Check price |
| ProGrade Cobalt V90 | UHS-II V90 | 300 / 250 MB/s | 512 GB V90 | Check price |
How We Picked
Three official facts. This is the compact a7C II, not the dual-slot A7 IV and not the 61 MP A7R V.
- Weigh the slot, not a CFexpress brochure. Sony UK: one SD (UHS-I/II) slot, 33.0 MP stills, Hi+ about 10 fps, JPEG Extra fine L 88 frames / RAW 44 / uncompressed RAW 18. Body about 514 g with battery and card. 4K 60/50p is Super 35 only. No RAW movie output on this chassis.
- Read Sony’s card table, not a V90 slogan. Help Guide Memory cards that can be used: XAVC HS 4K and XAVC S 4K at 200 Mbps need SDHC/SDXC U3 or higher. XAVC S-I 4K at 600 Mbps and S-I HD need SDXC V90. Proxy on HS/S 4K needs V60. S&Q 4K Long GOP needs V60; S&Q S-I still needs V90. S-I 4K 59.94p is 600 Mbps — 75 MB/s — which is why V90’s 90 MB/s floor exists and U3’s 30 MB/s floor does not.
- One slot changes capacity. A7 IV and A7R V can put CFexpress Type A in slot 1. This body cannot. 600 Mbps on a 128 GB card is roughly a half-hour of S-I 4K 60p before the card is full; 256 GB is the practical single-slot size. May 2025’s version of this URL stacked five V90s and a V60 with first-person testing. This rewrite follows Sony’s rows.
Detailed Reviews
Sony SF-G Tough V90 View on Amazon View on B&H
| Bus / class | UHS-II, U3, V90 — SF-G series TOUGH specs |
|---|---|
| Rated speed | Read up to 300 MB/s, write up to 299 MB/s (HD312) |
| Capacities | 32 / 64 / 128 / 256 GB (SF-G256T) |
| Build | One-piece moulding, IP68, no write-protect switch |
| a7C II codec | Unlocks XAVC S-I 4K 600 Mbps |
Why it fits the a7C II. Sony’s camera table and Sony’s card line meet on V90. SF-G is the first-party UHS-II V90 with a 90 MB/s guaranteed write floor and a 299 MB/s peak write. S-I 4K 60p is 600 Mbps (75 MB/s); that sits under V90 and over U3. The compact body lives in bags and coat pockets — the TOUGH spec is IP68, 5 m drop, 18× SD-standard bend resistance, ribs and write-protect switch designed out. The A7 IV guide can treat 128 GB as one of two slots. This camera has one slot; buy 256 GB (SF-G256T) unless the job is stills-only JPEG.
Skip this if the Rec Format never leaves XAVC HS / S 4K Long GOP. That job is V60. Also skip if 512 GB V90 is the point — SF-G stops at 256 GB.
- V90 matches Sony’s S-I 4K 600 Mbps row
- IP68 one-piece body for a travel compact
- 256 GB SKU exists for the single slot
- No 512 GB SF-G
- TOUGH tax versus Kingston’s same V90 class
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
Kingston Canvas React Plus View on Amazon View on B&H
| Bus / class | Class 10, UHS-II, U3, V90 — Kingston Canvas React Plus |
|---|---|
| Rated speed | 300 MB/s read / 260 MB/s write |
| Capacities | 32 / 64 / 128 / 256 GB |
Why it is Value. Same Video Speed Class as SF-G. 260 MB/s peak write is below Sony’s 299 MB/s and still far above the 90 MB/s V90 floor and the 75 MB/s S-I 4K 60p stream. May 2025 buried Kingston as pick four behind two other V90s. Here it is the V90 you buy when Tough IP68 is not the job. Format in the camera; pair with a UHS-II reader if the 300 MB/s read rating is the point of the offload.
Skip this if the card lives in a wet coat pocket and you want the one-piece SF-G body. Also skip 32 GB — S-I 4K 60p will fill it in minutes.
- V90 at a street price below SF-G
- 256 GB matches the single-slot size
- U3 + V90 on Sony’s S-I row
- Not IP68 TOUGH
- Peak write 260 vs Sony’s 299 MB/s
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
Sony SF-M Series V60 View on Amazon View on B&H
| Bus / class | UHS-II, U3, V60 — SF-M series specs |
|---|---|
| Rated speed | Read up to 277 MB/s, write up to 150 MB/s |
| a7C II rows | U3 for 200 Mbps Long GOP; V60 for proxy and S&Q 4K |
| Not this card | XAVC S-I 4K / HD (Sony: V90) |
Why it is Budget, not a V90. Most a7C II movie menus never open S-I. XAVC S 4K 60p 4:2:2 is 200 Mbps — 25 MB/s — inside U3’s 30 MB/s floor. Turn proxy on and Sony bumps the requirement to V60. S&Q 4K Long GOP is 250–280 Mbps and also V60. SF-M is Sony’s V60 UHS-II: 150 MB/s peak write, capacities through 512 GB, which this single slot actually uses. The old page’s SanDisk UHS-II V60 did that job; SF-M is the first-party row that matches the Help Guide’s V60 cells. The A7R V page uses SF-M as Value because that body also has 8K and a CFexpress slot — different math.
Skip this if Rec Format is XAVC S-I. Sony will refuse V60 for that codec.
- V60 covers proxy and S&Q 4K on Sony’s sheet
- 512 GB exists; SF-G stops at 256 GB
- UHS-II still clears 33 MP bursts faster than UHS-I
- Not V90 — no S-I 4K
- 150 MB/s peak write vs SF-G’s 299
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
If You Need Something Else
CFexpress Type A does not go in this slot. V90 at 512 GB and a second V90 brand are the.
ProGrade Digital Cobalt V90 View on Amazon View on B&H
| Rated speed | Up to 300 MB/s read / 250 MB/s write — ProGrade V90 datasheet |
|---|---|
| Capacities | 64 / 128 / 256 / 512 GB |
| This site | Overall on the A7R V UHS-II guide |
Same V90 class. 512 GB is the reason to leave SF-G: Sony’s Tough line stops at 256 GB. May 2025 made Cobalt Overall on this URL. On a 33 MP single-slot compact it is a capacity, not the default. Buy it if the kit is already ProGrade, or if one 512 GB card replaces two 256 GB cards you cannot overflow.
Skip this if 256 GB V90 is enough. That is SF-G or Kingston.
Check Price on Amazon US, UK, CA, DE → Check Price on B&H
Lexar Professional 2000x GOLD View on Amazon View on B&H
| Rated speed | Up to 300 MB/s read / 260 MB/s write, V90 — Lexar GOLD 2000x |
|---|---|
| Capacities | 64 / 128 / 256 / 512 GB |
Old pick two on this URL. Same V90 floor as Kingston, same 260 MB/s write rating. Keep it if Lexar is already in the bag; do not buy a second V90 brand “for the a7C II” when Kingston or SF-G is already Overall/Value.
Skip this if you do not already own Lexar readers.
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Frequently Asked Questions
Why V90 is Overall when Sony lists U3 for 4K
U3 is the Long GOP row: XAVC HS / S 4K max 200 Mbps. S-I 4K is 600 Mbps and Sony prints SDXC V90. This body has one slot, so the default card unlocks every Rec Format. SF-M V60 is Budget for people who never open S-I.
Whether a UHS-I card works in the a7C II
Yes. The slot is UHS-I/II. Stills and U3 Long GOP 4K will record. Buffer clear and offload run at UHS-I. Proxy 4K and S&Q 4K need V60. S-I needs V90. a UHS-I V30 is a stills/JPEG card, not the hybrid default.
How one slot differs from the A7 IV
A7 IV has CFexpress Type A + SD. This camera does not. A failed or full card ends the take. 256 GB is the practical size; two 128 GB cards are a swap workflow, not overflow. A7 IV SD guide: Best SD Memory Card for Sony A7 IV.
Whether 4K 60p is full-frame on this body
No. Sony: 4K 60/50p is Super 35 only. Full-frame 4K on the a7C II is 24/30p (and the HS 24p rows). Card speed does not restore a full-frame 60p mode.
What SDHC does to long movie clips
Sony: movies on SDHC split at 4 GB. Time-lapse stops before that split. Use SDXC (64 GB and up) for anything longer than a short clip. Format the card in the camera.
Final Verdict
For Sony a7C II, buy Sony SF-G Tough V90 (256 GB if this is the only card). Take Kingston Canvas React Plus when V90 is the spec and Tough is not. Take SF-M V60 when Rec Format stays on Long GOP 4K. Leave CFexpress Type A on the A7 IV / A7R V pages — this slot is SD only.
Timing note. UHS-II and CFexpress prices are unusually competitive during Amazon’s October sale. Our Prime Big Deal Days 2026 game plan explains how to check a card discount is real before the timer runs out.