Decision tools · Compare

A1 II vs A7R III

Quick take: The A1 II has the highest resolution at 50MP; the A7R III is the most affordable.

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.

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 II — Professional Sports, Wildlife & High-Resolution Studio Work: The most complete camera ever made — 50MP, 30fps, 8K, and the world's best EVF in a single flagship body.

A7R III — Landscape, Studio & Commercial Photography: The camera that converted professionals to mirrorless — 42MP, IBIS, and 10fps in a body that still competes today.

Who should buy what
A1 II (2024)
is the right camera for you if…
  • Professional sports and wildlife photographers who need 30fps, 50MP, and the best AF available
  • Commercial and advertising photographers who demand 50MP resolution alongside pro video specs
  • Photojournalists who need a single body capable of handling every assignment
  • Sony system shooters ready to invest in the absolute best
A7R III (2017)
is the right camera for you if…
  • Landscape and studio photographers who need 42MP resolution at a used-price discount vs A7R IV
  • Canon/Nikon DSLR professionals considering a mirrorless switch at a lower investment
  • Commercial and product photographers who want full-frame resolution with IBIS for handheld work
  • Portrait photographers who want the sharpest possible full-frame files for large print work
Full specificationsthe better value in each row is highlighted
Specification A1 IISony · 2024A7R IIISony · 2017
Price £5,699£1,799Best
Sensor 50.1MP full-frame stacked BSI CMOS42.4MP full-frame BSI Exmor R CMOS
Resolution 50.1MPBest42.4MP
Video 8K/30p, 4K/120p 10-bit, S-Log34K/30p (full-frame readout), 1080p/120p
Autofocus AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train399 phase-detect + 425 contrast AF points — real-time Eye AF
Stabilisation 8.5-stop IBIS (with in-lens OSS)5-axis IBIS — 5.5 stops
Burst Rate 30fps electronic (with full AF/AE), 10fps mechanicalBest10fps with AF/AE tracking
Battery Life ~530 shots (CIPA)~650 shots (CIPA)Best
Weight 743g (body only)650g (body only)Best
Dimensions 136.1 × 96.9 × 82.9mm126.9 × 95.6 × 73.7mm
Weather Sealed YesYes
Viewfinder EVF 0.9× 9.44M-dot — the highest resolution EVF availableEVF, 3.69M dots, 0.78× magnification
Screen 3.2" fully articulating touchscreen, 2.1M dots3.0" touchscreen, tilting
Mount Sony E-mount (full-frame)Sony FE mount (full-frame E-mount)
Memory Cards Dual CFexpress Type A / SD UHS-II slotsDual SD slots (one UHS-II)
Connectivity USB-C 3.2 Gen 2, Wi-Fi 6GHz, Bluetooth 5.3, HDMI full-sizeUSB-C, Bluetooth, Wi-Fi, 3.5mm mic jack

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 II
A7R III
Portrait
9.0/10
7.8/10
Street
6.6/10
6.1/10
Travel
6.4/10
6.1/10
Wedding & Events
8.7/10
7.5/10
Vlogging & Video
6.4/10
—
Filmmaking
8.2/10
6.3/10
Documentary
8.3/10
6.7/10
Sports & Action
9.3/10
7.3/10
Landscape
8.0/10
7.4/10
Wildlife
9.2/10
7.6/10
Casual
5.3/10
4.7/10
Food
8.5/10
7.0/10
Macro
8.1/10
6.2/10
Architecture
8.4/10
7.5/10
Astrophotography
7.2/10
7.0/10

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 →

Next
More comparisons with A1 II
Camera family history