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Quick take: The A7R IV has the highest resolution at 61MP; the FX30 is the most affordable.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
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A7R IV — Landscape, Studio, Commercial: 61MP in a mirrorless body — the resolution benchmark.
FX30 — Video Creators & Filmmakers: The Cinema Line entry point — S-Cinetone colour science, 4K/120p, and XLR audio in a compact, affordable body that punches far above its price.
| Specification | A7R IVSony · 2019 | FX30Sony · 2022 |
|---|---|---|
| Price | £2,199 | £1,459Best |
| Sensor | Full-frame BSI Exmor R CMOS 35mm | 26.1MP APS-C BSI Exmor R CMOS |
| Resolution | 61.0MPBest | 26.1MP |
| Video | 4K 30fps | 4K/120p, 4K/60p S-Log3, 1080p/240p |
| Autofocus | 567-point phase-detect, real-time tracking | Real-time tracking AF, 759-point phase-detect |
| Stabilisation | 5-axis IBIS, 5.5 stops | 5-axis Active IBIS |
| Burst Rate | 10fps | 20fps electronicBest |
| Battery Life | 670 shots (CIPA) | 740 shots (CIPA)Best |
| Weight | 665g (body only) | 579g (body only)Best |
| Dimensions | 128.9 × 96.4 × 77.5mm | 129.7 × 77.8 × 84.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.78× 5.76M-dot | No viewfinder |
| Screen | 3.0" tilting touchscreen, 1.44M-dot | 3.0" fully articulating touchscreen |
| Mount | Sony E-Mount | Sony FE (E-mount) |
| Memory Cards | Dual SD UHS-II slots | Dual CFexpress Type A / SD UHS-II |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.1, USB-C 3.2 | USB-C 3.2, HDMI A, Wi-Fi, Bluetooth |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →