Upgrade Guide

Sony A7R III→Sony A1 II

Is it worth upgrading? Spec analysis, key improvements, and our verdict.

You own

Sony

A7R III

£1799

2017

→

Upgrade to

Sony

A1 II

£6500 (+£4,701)

2025

✅

Worthwhile

Clear improvements over the A7R III. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A1 II

↑

Resolution

50MP vs 42MP (+8MP)
↑

Stabilisation

Improved — 8.5-stop IBIS (with in-lens OSS)
↑

Burst rate

30fps electronic (with full AF/AE), 10fps mechanical vs 10fps with AF/AE tracking
↑

Generation

8 years newer (2025 vs 2017)

Suitability by genre

Full spec comparison

Spec	A7R III	A1 II
Price	£1,799	£6,500
Released	2017	2025	↑
Sensor	42.4MP full-frame BSI Exmor R CMOS	50.1MP full-frame stacked BSI CMOS
Resolution	42MP	50MP	↑
Video	4K/30p (full-frame readout), 1080p/120p	8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion
Autofocus	399 phase-detect + 425 contrast AF points — real-time Eye AF	AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train
Stabilisation	5-axis IBIS — 5.5 stops	8.5-stop IBIS (with in-lens OSS)
Burst Rate	10fps with AF/AE tracking	30fps electronic (with full AF/AE), 10fps mechanical	↑
Battery Life	~650 shots (CIPA)	~530 shots (CIPA)	↓
Weight	650g body only	743g body only	↓
Weather Sealed	Yes	Yes
Viewfinder	EVF, 3.69M dots, 0.78× magnification	EVF 0.9× 9.44M-dot — the highest resolution EVF available
Screen	3.0" touchscreen, tilting	3.2" fully articulating touchscreen, 2.1M dots
Mount	Sony FE mount (full-frame E-mount)	Sony E-mount (full-frame)
Memory Cards	Dual SD slots (one UHS-II)	Dual CFexpress Type A / SD UHS-II slots

Compare side-by-side

See A7R III and A1 II next to each other with our interactive comparison tool.

Get a personalised upgrade score

Tell us what you shoot and we'll score the A1 II against your specific genres — not just specs.

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