Upgrade Guide

Sony A6600→Sony Sony A9 III

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

You own

Sony

A6600

£1299

2019

→

Upgrade to

Sony

Sony A9 III

£5999 (+£4,700)

2023

✅

Worthwhile

Clear improvements over the A6600. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the Sony A9 III

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	A6600	Sony A9 III
Price	£1,299	£5,999
Released	2019	2023	↑
Sensor	24.2MP APS-C Exmor CMOS	24.6MP full-frame Exmor RS CMOS (global shutter)
Resolution	24MP	25MP	↑
Video	4K/30p (no crop), 1080p/120p	4K/120p, 4K/60p, 1080p/240p
Autofocus	Real-time Eye AF, real-time tracking — inherited from A9	AI subject recognition AF, 759-point phase-detect
Stabilisation	5-axis IBIS — 5 stops	8-stop IBIS
Burst Rate	11fps continuous with AF/AE	120fps blackout-free electronic	↑
Battery Life	~810 shots (CIPA) — large NP-FZ100 battery	530 shots (CIPA)	↓
Weight	503g body only	703g body only	↓
Weather Sealed	Yes	Yes
Viewfinder	EVF, 2.36M dots, 0.70× magnification	0.64" Quad-XGA OLED EVF, 9.44M dots
Screen	3.0" touchscreen, tilting	3.2" fully articulating touchscreen
Mount	Sony E-mount (APS-C)	Sony FE (E-mount)
Memory Cards	Single SD UHS-I slot	Dual CFexpress Type A / SD UHS-II

Compare side-by-side

See A6600 and Sony A9 III next to each other with our interactive comparison tool.

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Other upgrades from the A6600

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