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Quick take: The A7R III has the highest resolution at 42MP; the A7R III is the most affordable.
16 specs side by side·14 genres scored·UK prices from Wex Photo Video and Clifton Cameras
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A7R III — Landscape, Studio & Commercial Photography: The camera that converted professionals to mirrorless — 42MP, IBIS, and 10fps in a body that still competes today.
| Specification | A7R IIISony · 2017 | Cyber-shot RX10 VSony · 2026 |
|---|---|---|
| Price | £1,799Best | £2,199 |
| Sensor | 42.4MP full-frame BSI Exmor R CMOS | 20.1MP 1-inch stacked Exmor RS CMOS |
| Resolution | 42.4MPBest | 20.1MP |
| Video | 4K/30p (full-frame readout), 1080p/120p | Uncropped 4K/60p, 10-bit, H.265 |
| Autofocus | 399 phase-detect + 425 contrast AF points — real-time Eye AF | AI-driven phase-detect AF with real-time subject tracking |
| Stabilisation | 5-axis IBIS — 5.5 stops | Optical (in-lens), no IBIS |
| Burst Rate | 10fps with AF/AE tracking | 30fps (blackout-free, full AF/AE tracking)Best |
| Battery Life | ~650 shots (CIPA)Best | 630 shots (CIPA) |
| Weight | 650g (body only) | 1,111g (with battery and card)Best |
| Dimensions | 126.9 × 95.6 × 73.7mm | — |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 3.69M dots, 0.78× magnification | EVF, 3.68M dots, 0.78x magnification |
| Screen | 3.0" touchscreen, tilting | Tilting screen |
| Mount | Sony FE mount (full-frame E-mount) | Fixed Zeiss Vario-Sonnar 24-600mm f/2.4-4.0 lens (25x optical zoom) |
| Memory Cards | Dual SD slots (one UHS-II) | Single SD (UHS-II) |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack | USB-C, micro-HDMI, 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 →