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A1 vs Sony RX1R III

Quick take: The Sony RX1R III has the highest resolution at 61MP; the Sony RX1R III is the most affordable; only the A1 is weather sealed.

16 specs side by side·14 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.

Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more

Verdictwhich should you buy?

A1 — Professional Sport, Wildlife, Portrait & Hybrid Shooting: 50MP, 30fps, 8K — the Sony A1 is the most complete professional camera ever made.

Who should buy what
A1 (2021)
is the right camera for you if…
  • Professional photographers who need resolution and speed without compromise
  • Sports and wildlife photographers demanding the absolute fastest Sony
  • Studio and fashion photographers who also shoot sport or events
  • A9 III or A7R V owners who want a single body that does everything
Full specificationsthe better value in each row is highlighted
Specification A1Sony · 2021Sony RX1R IIISony · 2025
Price £4,799£3,899Best
Sensor 50.1MP Full-Frame Stacked BSI CMOS Exmor RS61MP full-frame Exmor R BSI CMOS
Resolution 50.1MP61.0MPBest
Video 8K/30p, 4K/120p, 1080p/240p4K/30p, 10-bit
Autofocus Real-time Tracking, AI subject recognition — 759 phase-detect pointsHybrid phase-detect AF (693 points) with eye detection
Stabilisation IBIS — up to 5.5 stopsNo stabilisation
Burst Rate 30fps electronic with full AF/AEBest5fps
Battery Life ~430 shots (CIPA)Best300 shots (CIPA, LCD)
Weight 737g (with battery and card)496g (with battery and card)Best
Dimensions 128.9 × 96.9 × 80.8mm—
Weather Sealed YesBestNot weather sealed
Viewfinder EVF, 9.44M dots, 0.90× magnification, 240fpsEVF, 2.36M dots
Screen 3.0" fully tilting touchscreenTilting touchscreen
Mount Sony FE mount (full-frame E-mount)Fixed 35mm f/2 Zeiss Sonnar lens
Memory Cards Dual CFexpress Type A / SD UHS-IISingle SD (UHS-II)
Connectivity USB-C, Wi-Fi 5GHz, Bluetooth, Ethernet, HDMIUSB-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
A1
Sony RX1R III
Portrait
8.2/10
5.9/10
Street
6.1/10
7.6/10
Travel
6.0/10
6.1/10
Wedding & Events
7.9/10
5.7/10
Filmmaking
7.8/10
5.3/10
Documentary
7.6/10
5.5/10
Sports & Action
8.8/10
—
Landscape
7.6/10
5.7/10
Wildlife
8.7/10
—
Casual
4.8/10
4.6/10
Food
7.4/10
6.3/10
Macro
7.3/10
4.8/10
Architecture
7.9/10
6.0/10
Astrophotography
6.8/10
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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