Upgrade Guide

Sony A7C→Sony A7S III

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

You own

Sony

A7C

£1299

2020

→

Upgrade to

Sony

A7S III

£2999 (+£1,700)

2020

✅

Worthwhile

Clear improvements over the A7C. 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	A7S III
Price	£1,299	£2,999
Released	2020	2020
Sensor	24.2MP Full-Frame Exmor R BSI CMOS	12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)
Resolution	24MP	12MP	↓
Video	4K/30p (oversampled), 1080p/120p slow-motion, S-Log2/S-Log3	4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p
Autofocus	Phase-detect, 693 points, real-time Eye AF & animal AF	Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition
Stabilisation	5-axis IBIS, 5 stops	5.5-stop IBIS
Burst Rate	10fps with AF/AE tracking	10fps mechanical
Battery Life	~740 shots (CIPA) — outstanding for a Sony mirrorless	~600 shots (CIPA) / ~70min continuous 4K recording	↓
Weight	509g (body, battery, card)	699g (body, battery, card)	↓
Weather Sealed	No	Yes	↑
Viewfinder	None built-in — use rear screen or accessory EVF	OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made
Screen	3.0" vari-angle touchscreen, 921k dots	3.0" vari-angle touchscreen, 1.44M dots
Mount	Sony E-mount	Sony E-mount
Memory Cards	Single SD UHS-II	Dual CFexpress Type A / SD UHS-II (both slots)

Compare side-by-side

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

Get a personalised upgrade score

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Other upgrades from the A7C

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