Decision tools · Compare
A7 IV vs Sony RX1R III
Quick take: The Sony RX1R III has the highest resolution at 61MP; the A7 IV is the most affordable; only the A7 IV is weather sealed.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
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Verdictwhich should you buy?
A7 IV — Portrait & Wedding Photography: The full-frame portrait benchmark — 33MP, AI Eye AF, and exceptional skin-tone rendering in a pro-grade hybrid body.
Who should buy what
A7 IV (2021)
is the right camera for you if…
- Working photographers who want a reliable full-frame all-rounder
- Portrait, wedding, and event photographers needing 33MP and fast AF
- A7 III owners ready for a major upgrade in resolution, AF, and video
- Hybrid shooters who want 4K/60p and 33MP stills in one dependable body
Full specificationsthe better value in each row is highlighted
| Specification | A7 IVSony · 2021 | Sony RX1R IIISony · 2025 |
|---|---|---|
| Price | £2,099Best | £3,899 |
| Sensor | 33MP Full-frame BSI Exmor R CMOS | 61MP full-frame Exmor R BSI CMOS |
| Resolution | 33.0MP | 61.0MPBest |
| Video | 4K/60p oversampled, 10-bit internal, S-Log3, S-Cinetone | 4K/30p, 10-bit |
| Autofocus | 759-point phase-detect, AI subject recognition | Hybrid phase-detect AF (693 points) with eye detection |
| Stabilisation | 5-axis IBIS, 5.5 stops | No stabilisation |
| Burst Rate | 10fps mechanical, 30fps electronicBest | 5fps |
| Battery Life | ~580 shots (CIPA)Best | 300 shots (CIPA, LCD) |
| Weight | 659g (body only) | 496g (with battery and card)Best |
| Dimensions | 131.3 × 96.4 × 79.8mm | — |
| Weather Sealed | YesBest | Not weather sealed |
| Viewfinder | EVF, 3.69M dots, 0.78× magnification | EVF, 2.36M dots |
| Screen | 3.0" vari-angle touchscreen | Tilting touchscreen |
| Mount | Sony FE (full-frame E-mount) | Fixed 35mm f/2 Zeiss Sonnar lens |
| Memory Cards | Slot 1 CFexpress Type A / SD UHS-II, slot 2 SD UHS-II | Single SD (UHS-II) |
| Connectivity | USB-C (3.2 Gen 2), Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
A7 IV
Sony RX1R III
Portrait
8.2/10
5.9/10
Street
6.5/10
7.6/10
Travel
6.5/10
6.1/10
Wedding & Events
7.9/10
5.7/10
Vlogging & Video
6.2/10
—
Filmmaking
7.2/10
5.3/10
Documentary
7.4/10
5.5/10
Sports & Action
7.5/10
—
Landscape
6.7/10
5.7/10
Wildlife
7.8/10
—
Casual
5.2/10
4.6/10
Food
7.6/10
6.3/10
Macro
7.3/10
4.8/10
Architecture
6.8/10
6.0/10
Astrophotography
7.3/10
6.2/10
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 →
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