Upgrade Guide

Sony A7C II→Sony Sony A9 III

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

You own

Sony

A7C II

£1499

2023

→

Upgrade to

Sony

Sony A9 III

£5999 (+£4,500)

2023

✅

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 Sony A9 III

↑

Weather sealing

Added — fully sealed body
↑

Stabilisation

Improved — 8-stop IBIS
↑

Burst rate

120fps blackout-free electronic vs 10fps mechanical, 30fps electronic

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	A7C II	Sony A9 III
Price	£1,499	£5,999
Released	2023	2023
Sensor	33MP Full-frame Exmor R BSI CMOS	24.6MP full-frame Exmor RS CMOS (global shutter)
Resolution	33MP	25MP	↓
Video	4K/60p oversampled, S-Log3, 10-bit internal	4K/120p, 4K/60p, 1080p/240p
Autofocus	759-point phase-detect, AI subject recognition	AI subject recognition AF, 759-point phase-detect
Stabilisation	5-axis IBIS, 7.0 stops	8-stop IBIS
Burst Rate	10fps mechanical, 30fps electronic	120fps blackout-free electronic	↑
Battery Life	~530 shots (CIPA)	530 shots (CIPA)
Weight	514g body only	703g body only	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF, 2.36M dots, 0.70× magnification	0.64" Quad-XGA OLED EVF, 9.44M dots
Screen	3.0" vari-angle touchscreen	3.2" fully articulating touchscreen
Mount	Sony FE (full-frame E-mount)	Sony FE (E-mount)
Memory Cards	Dual slots: SD UHS-II + CFexpress Type A	Dual CFexpress Type A / SD UHS-II

Compare side-by-side

See A7C II and Sony A9 III next to each other with our interactive comparison tool.

Get a personalised upgrade score

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