Decision tools · Compare

A7R III vs FX30

Quick take: The A7R III has the highest resolution at 42MP.

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?

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

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.

Who should buy what
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
FX30 (2022)
is the right camera for you if…
  • Filmmakers and video creators who want a dedicated cinema-style APS-C body
  • Content creators who need S-Cinetone and S-Log3 in a compact form factor
  • A6700 owners who want cinema-style ergonomics and a full-size HDMI port
  • Video professionals who want Sony's colour science without full-frame pricing
Full specificationsthe better value in each row is highlighted
Specification A7R IIISony · 2017FX30Sony · 2022
Price £1,799£1,459Best
Sensor 42.4MP full-frame BSI Exmor R CMOS26.1MP APS-C BSI Exmor R CMOS
Resolution 42.4MPBest26.1MP
Video 4K/30p (full-frame readout), 1080p/120p4K/120p, 4K/60p S-Log3, 1080p/240p
Autofocus 399 phase-detect + 425 contrast AF points — real-time Eye AFReal-time tracking AF, 759-point phase-detect
Stabilisation 5-axis IBIS — 5.5 stops5-axis Active IBIS
Burst Rate 10fps with AF/AE tracking20fps electronicBest
Battery Life ~650 shots (CIPA)740 shots (CIPA)Best
Weight 650g (body only)579g (body only)Best
Dimensions 126.9 × 95.6 × 73.7mm129.7 × 77.8 × 84.5mm
Weather Sealed YesYes
Viewfinder EVF, 3.69M dots, 0.78× magnificationNo viewfinder
Screen 3.0" touchscreen, tilting3.0" fully articulating touchscreen
Mount Sony FE mount (full-frame E-mount)Sony FE (E-mount)
Memory Cards Dual SD slots (one UHS-II)Dual CFexpress Type A / SD UHS-II
Connectivity USB-C, Bluetooth, Wi-Fi, 3.5mm mic jackUSB-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.

How they score by genreengine base scores out of 10
Genre
A7R III
FX30
Portrait
7.8/10
5.9/10
Street
6.1/10
4.4/10
Travel
6.2/10
5.9/10
Wedding & Events
7.5/10
6.1/10
Filmmaking
6.3/10
8.2/10
Documentary
6.7/10
7.8/10
Sports & Action
7.3/10
5.9/10
Landscape
7.4/10
5.2/10
Wildlife
7.6/10
6.2/10
Casual
4.7/10
5.4/10
Food
7.0/10
7.1/10
Macro
6.2/10
5.2/10
Architecture
7.5/10
6.0/10
Astrophotography
7.0/10
5.6/10
Vlogging & Video
—
6.5/10

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 A7R III
Camera family history