Decision tools · Compare

A1 II vs A6400

Quick take: The A1 II has the highest resolution at 50MP; the A6400 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.

A6400 — Content Creation & Vlogging: The best value APS-C Sony you can buy — especially used. Real-time Eye AF at this price point was transformative when it launched and still makes it one of the most reliable autofocus systems in the lineup.

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
A6400 (2019)
is the right camera for you if…
  • Vloggers and content creators who need a flip screen and reliable AF
  • Photographers upgrading from a compact or smartphone
  • Beginners who want room to grow into a full E-mount lens ecosystem
  • Anyone prioritising autofocus performance at an accessible price
Full specificationsthe better value in each row is highlighted
Specification A1 IISony · 2024A6400Sony · 2019
Price £5,699£749Best
Sensor 50.1MP full-frame stacked BSI CMOS24.2MP APS-C Exmor CMOS BSI
Resolution 50.1MPBest24.2MP
Video 8K/30p, 4K/120p 10-bit, S-Log34K/30p (6K oversampled, no crop), 1080p/120p slow-motion
Autofocus AI subject recognition — human, animal, bird, insect, vehicle, aircraft, trainPhase-detect, 425 points, real-time Eye AF & animal AF
Stabilisation 8.5-stop IBIS (with in-lens OSS)No stabilisation
Burst Rate 30fps electronic (with full AF/AE), 10fps mechanicalBest11fps mechanical, 8fps with AF tracking
Battery Life ~530 shots (CIPA)Best~410 shots (CIPA)
Weight 743g (body only)403g (with battery and card)Best
Dimensions 136.1 × 96.9 × 82.9mm120.0 × 66.9 × 59.7mm
Weather Sealed YesYes
Viewfinder EVF 0.9× 9.44M-dot — the highest resolution EVF availableEVF, 2.36M dots, 0.70× magnification
Screen 3.2" fully articulating touchscreen, 2.1M dots3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots
Mount Sony E-mount (full-frame)Sony E-mount
Memory Cards Dual CFexpress Type A / SD UHS-II slotsSingle SD UHS-I
Connectivity USB-C 3.2 Gen 2, Wi-Fi 6GHz, Bluetooth 5.3, HDMI full-sizeMicro-USB, Wi-Fi, Bluetooth, NFC

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
A6400
Portrait
9.0/10
6.7/10
Street
6.6/10
7.3/10
Travel
6.4/10
6.7/10
Wedding & Events
8.7/10
5.6/10
Vlogging & Video
6.4/10
5.8/10
Filmmaking
8.2/10
5.1/10
Documentary
8.3/10
6.1/10
Sports & Action
9.3/10
6.9/10
Landscape
8.0/10
5.6/10
Wildlife
9.2/10
7.4/10
Casual
5.3/10
5.8/10
Food
8.5/10
6.1/10
Macro
8.1/10
5.2/10
Architecture
8.4/10
5.5/10
Astrophotography
7.2/10
6.0/10

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 →

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