The Sony A7R VI packs a 66.8MP sensor into a body with dual card slots — each accepting either CFexpress Type A or SD (UHS-II/UHS-I) cards. With files this large, the wrong card choice means slower buffer clearing, missed bursts, and restricted video modes.
This guide breaks down exactly what card you need based on how you shoot, using three well-reviewed CFexpress Type A options.
The Cheat Sheet: Top 3 Recommendations
| Category | Card | Best For |
| Fastest Raw Speed | Lexar Gold CFexpress 2.0 Type A | Burst shooters, buffer-heavy workflows |
| Most Durable | Sony Tough G CFexpress Type A | Harsh conditions, field/travel work |
| Best Capacity-to-Price | ProGrade Digital CFexpress 2.0 Type A (240GB) | Long shoots, honest speed labeling |
Do You Actually Need CFexpress?
- Stills only: A V60 or V90 UHS-II SD card is enough for most shooting.
- Burst/action photography: CFexpress Type A clears the buffer significantly faster than SD.
- 8K video (XAVC HS, 520 Mbps): Requires VPG200-rated CFexpress A or V90 SD.
- 4K video: V60 SD or VPG200 CFexpress A covers it.
- Certain S&Q slow-motion modes: CFexpress A is required — no SD card, regardless of rating, will work.
Important: The A7R VI supports CFexpress Type A 2.0 only, not the newer 4.0 standard, even though 4.0 cards are backward-compatible and will run at 2.0 speeds. Buying a 4.0 card for this camera means paying for speed you can’t use — all three cards below are native 2.0.
Deep Dive Reviews
1. Lexar Gold CFexpress 2.0 Type A — Fastest Raw Speed
Verdict: The fastest of the three in independent testing.
Independent testing by Alik Griffin measured this card at 825 MB/s write and 886 MB/s read — noticeably ahead of ProGrade’s 691 MB/s write speed in the same test. PetaPixel’s HD Tune benchmarks also placed Lexar’s Gold Series ahead of both Sony and ProGrade equivalents. It carries a VPG400 rating and comes in capacities from 80GB up to 1TB.
Best for photographers who prioritize the fastest possible buffer clearing during burst shooting.
2. Sony Tough G CFexpress Type A — Most Durable
Verdict: Built for rough conditions, backed by Sony’s own camera compatibility.
The Tough G series is rated 5x more resistant to drop impact and 10x more resistant to bending than industry standard, with IPX7 water and IP5X dust protection. Independent sustained-write testing found some slowdown after extended writes (a drop to around 276 MB/s sustained versus its 400 MB/s VPG rating), which is normal thermal behavior for this class of card, but it remains a dependable choice backed directly by the camera manufacturer.
Best for travel, outdoor, or field work where physical durability matters as much as speed.
3. ProGrade Digital CFexpress 2.0 Type A (240GB) — Best Capacity-to-Price
Verdict: The most transparent labeling of the three, with strong capacity for the price.
ProGrade is one of only two brands (alongside Novachips) that print real minimum sustained write speeds on the card label instead of just marketing max speeds — a small but meaningful transparency advantage. In PetaPixel’s Canon R5 burst testing, ProGrade’s card showed the most consistent performance between read and write speeds of any card tested. The 240GB capacity gives more headroom than the 160GB options from Lexar and Sony at a comparable price point.
Best for photographers who want more storage per dollar and value honest spec labeling over headline speed numbers.
Buying Advice: The Verdict
- Buy the Lexar Gold if buffer-clearing speed during bursts is your top priority.
- Buy the Sony Tough G if you shoot outdoors or in harsh conditions and want manufacturer-backed durability.
- Buy the ProGrade Digital 240GB if you want more storage per dollar and trust labeled specs over marketing numbers.
Reality check: Independent testers who’ve compared these cards side-by-side note that for most users, the real-world difference between them is small — camera-side limitations (not card speed) are often the actual bottleneck for stills shooting on the A7R VI.
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