Upgrade Guide

Sony A7S III→Sony A9 II

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

You own

Sony

A7S III

£2999

2020

→

Upgrade to

Sony

A9 II

£3299 (+£300)

2019

✅

Worthwhile

Clear improvements over the A7S III. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A9 II

Suitability by genre

Full spec comparison

Spec	A7S III	A9 II
Price	£2,999	£3,299
Released	2020	2019	↓
Sensor	12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)	24.2MP Full-Frame Stacked BSI CMOS Exmor RS
Resolution	12MP	24MP	↑
Video	4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p	4K/30p, 1080p/120p
Autofocus	Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition	693 phase-detect + 425 contrast-detect, real-time eye/body tracking
Stabilisation	5.5-stop IBIS	IBIS — 5-axis, up to 5.5 stops
Burst Rate	10fps mechanical	20fps (blackout-free with full AF/AE)	↑
Battery Life	~600 shots (CIPA) / ~70min continuous 4K recording	~500 shots (CIPA)	↓
Weight	699g (body, battery, card)	678g (with battery and card)	↑
Weather Sealed	Yes	Yes
Viewfinder	OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made	EVF, OLED 3.69M dots, 0.78× magnification
Screen	3.0" vari-angle touchscreen, 1.44M dots	3.0" tilting touchscreen
Mount	Sony E-mount	Sony FE (full-frame E-mount)
Memory Cards	Dual CFexpress Type A / SD UHS-II (both slots)	Dual SD UHS-II slots

Compare side-by-side

See A7S III and A9 II next to each other with our interactive comparison tool.

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Tell us what you shoot and we'll score the A9 II against your specific genres — not just specs.

Other upgrades from the A7S III

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Camera family history