Upgrade Guide

Sony A7C→Sony A7R III

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

You own

Sony

A7C

£1299

2020

→

Upgrade to

Sony

A7R III

£1799 (+£500)

2017

✅

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 A7R III

Suitability by genre

Full spec comparison

Spec	A7C	A7R III
Price	£1,299	£1,799
Released	2020	2017	↓
Sensor	24.2MP Full-Frame Exmor R BSI CMOS	42.4MP full-frame BSI Exmor R CMOS
Resolution	24MP	42MP	↑
Video	4K/30p (oversampled), 1080p/120p slow-motion, S-Log2/S-Log3	4K/30p (full-frame readout), 1080p/120p
Autofocus	Phase-detect, 693 points, real-time Eye AF & animal AF	399 phase-detect + 425 contrast AF points — real-time Eye AF
Stabilisation	5-axis IBIS, 5 stops	5-axis IBIS — 5.5 stops
Burst Rate	10fps with AF/AE tracking	10fps with AF/AE tracking
Battery Life	~740 shots (CIPA) — outstanding for a Sony mirrorless	~650 shots (CIPA)	↓
Weight	509g (body, battery, card)	650g body only	↓
Weather Sealed	No	Yes	↑
Viewfinder	None built-in — use rear screen or accessory EVF	EVF, 3.69M dots, 0.78× magnification
Screen	3.0" vari-angle touchscreen, 921k dots	3.0" touchscreen, tilting
Mount	Sony E-mount	Sony FE mount (full-frame E-mount)
Memory Cards	Single SD UHS-II	Dual SD slots (one UHS-II)

Compare side-by-side

See A7C and A7R III next to each other with our interactive comparison tool.

Get a personalised upgrade score

Tell us what you shoot and we'll score the A7R III against your specific genres — not just specs.

Other upgrades from the A7C

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Camera family history