Upgrade Guide

Sony A7C II→Sony A7S III

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

You own

Sony

A7C II

£1499

2023

→

Upgrade to

Sony

A7S III

£2999 (+£1,500)

2020

✅

Worthwhile

Clear improvements over the A7C II. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A7S III

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	A7C II	A7S III
Price	£1,499	£2,999
Released	2023	2020	↓
Sensor	33MP Full-frame Exmor R BSI CMOS	12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)
Resolution	33MP	12MP	↓
Video	4K/60p oversampled, S-Log3, 10-bit internal	4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p
Autofocus	759-point phase-detect, AI subject recognition	Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition
Stabilisation	5-axis IBIS, 7.0 stops	5.5-stop IBIS
Burst Rate	10fps mechanical, 30fps electronic	10fps mechanical
Battery Life	~530 shots (CIPA)	~600 shots (CIPA) / ~70min continuous 4K recording	↑
Weight	514g body only	699g (body, battery, card)	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF, 2.36M dots, 0.70× magnification	OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made
Screen	3.0" vari-angle touchscreen	3.0" vari-angle touchscreen, 1.44M dots
Mount	Sony FE (full-frame E-mount)	Sony E-mount
Memory Cards	Dual slots: SD UHS-II + CFexpress Type A	Dual CFexpress Type A / SD UHS-II (both slots)

Compare side-by-side

See A7C II and A7S III next to each other with our interactive comparison tool.

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Other upgrades from the A7C II

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