Upgrade Guide

Sony A7 III→Sony A7 IV

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

You own

Sony

A7 III

£1699

2018

→

Upgrade to

Sony

A7 IV

£2299 (+£600)

2021

✅

Worthwhile

Clear improvements over the A7 III. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A7 IV

Suitability by genre

Full spec comparison

Spec	A7 III	A7 IV
Price	£1,699	£2,299
Released	2018	2021	↑
Sensor	24.2MP Full-Frame Exmor R BSI CMOS	33MP Full-frame BSI Exmor R CMOS
Resolution	24MP	33MP	↑
Video	4K/30p (6K oversampled), 1080p/120p slow-motion	4K/60p oversampled, 10-bit internal, S-Log3, S-Cinetone
Autofocus	Phase-detect, 693 points, real-time Eye AF & animal AF	759-point phase-detect, AI subject recognition
Stabilisation	5-axis IBIS, 5 stops	5-axis IBIS, 5.5 stops
Burst Rate	10fps with AF/AE tracking	10fps mechanical, 30fps electronic
Battery Life	~710 shots (CIPA)	~580 shots (CIPA)	↓
Weight	565g (body, battery, card)	659g body only	↓
Weather Sealed	Yes	Yes
Viewfinder	EVF, 2.36M dots, 0.78× magnification	EVF, 3.69M dots, 0.78× magnification
Screen	3.0" tilting touchscreen, 921k dots	3.0" vari-angle touchscreen
Mount	Sony E-mount	Sony FE (full-frame E-mount)
Memory Cards	Dual SD (UHS-II slot 1, UHS-I slot 2)	Dual slots: CFexpress Type A + SD UHS-II

Compare side-by-side

See A7 III and A7 IV next to each other with our interactive comparison tool.

Get a personalised upgrade score

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Other upgrades from the A7 III

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Camera family history