Upgrade Guide

Sony A6700→Sony A7S III

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

You own

Sony

A6700

£999

2023

→

Upgrade to

Sony

A7S III

£2999 (+£2,000)

2020

✅

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 A7S III

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	A6700	A7S III
Price	£999	£2,999
Released	2023	2020	↓
Sensor	26MP APS-C Exmor R BSI CMOS	12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)
Resolution	26MP	12MP	↓
Video	4K/120p, 4K/60p oversampled, S-Log3, 10-bit	4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p
Autofocus	759-point phase-detect, AI subject recognition (human/animal/bird/vehicle)	Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition
Stabilisation	5-axis IBIS, 5.0 stops	5.5-stop IBIS
Burst Rate	11fps mechanical, 30fps electronic	10fps mechanical	↓
Battery Life	~570 shots (CIPA)	~600 shots (CIPA) / ~70min continuous 4K recording	↑
Weight	493g body only	699g (body, battery, card)	↓
Weather Sealed	No	Yes	↑
Viewfinder	EVF, 2.36M dots	OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made
Screen	3.0" vari-angle touchscreen	3.0" vari-angle touchscreen, 1.44M dots
Mount	Sony E-mount	Sony E-mount
Memory Cards	Single SD UHS-II / CFexpress Type A slot	Dual CFexpress Type A / SD UHS-II (both slots)

Compare side-by-side

See A6700 and A7S III next to each other with our interactive comparison tool.

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Other upgrades from the A6700

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