Upgrade Guide

Sony A6700→Sony Sony A9 III

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

You own

Sony

A6700

£999

2023

→

Upgrade to

Sony

Sony A9 III

£5999 (+£5,000)

2023

✅

Worthwhile

Clear improvements over the A6700. 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 11fps mechanical, 30fps electronic

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	A6700	Sony A9 III
Price	£999	£5,999
Released	2023	2023
Sensor	26MP APS-C Exmor R BSI CMOS	24.6MP full-frame Exmor RS CMOS (global shutter)
Resolution	26MP	25MP	↓
Video	4K/120p, 4K/60p oversampled, S-Log3, 10-bit	4K/120p, 4K/60p, 1080p/240p
Autofocus	759-point phase-detect, AI subject recognition (human/animal/bird/vehicle)	AI subject recognition AF, 759-point phase-detect
Stabilisation	5-axis IBIS, 5.0 stops	8-stop IBIS
Burst Rate	11fps mechanical, 30fps electronic	120fps blackout-free electronic	↑
Battery Life	~570 shots (CIPA)	530 shots (CIPA)	↓
Weight	493g body only	703g body only	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF, 2.36M dots	0.64" Quad-XGA OLED EVF, 9.44M dots
Screen	3.0" vari-angle touchscreen	3.2" fully articulating touchscreen
Mount	Sony E-mount	Sony FE (E-mount)
Memory Cards	Single SD UHS-II / CFexpress Type A slot	Dual CFexpress Type A / SD UHS-II

Compare side-by-side

See A6700 and Sony A9 III next to each other with our interactive comparison tool.

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