Upgrade Guide

Sony RX100 VI→Sony A7S III

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

You own

Sony

RX100 VI

£700

2018

→

Upgrade to

Sony

A7S III

£2999 (+£2,299)

2020

✅

Worthwhile

Clear improvements over the RX100 VI. Whether it justifies the cost depends on which upgrades matter most to your shooting.

What's new in the A7S III

↑

Weather sealing

Added — fully sealed body
↑

Stabilisation

IBIS added — significant for handheld and video
↑

Battery life

~600 shots (CIPA) / ~70min continuous 4K recording vs ~240 shots (CIPA)
↑

Generation

2 years newer (2020 vs 2018)

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	RX100 VI	A7S III
Price	£700	£2,999
Released	2018	2020	↑
Sensor	20.1MP 1-inch BSI Stacked CMOS	12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)
Resolution	20MP	12MP	↓
Video	4K/30p, 1080p/120p, 960fps HFR	4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p
Autofocus	Fast Hybrid AF, 315 phase-detect points, Eye AF	Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition
Stabilisation	Optical SteadyShot	5.5-stop IBIS
Burst Rate	24fps	10fps mechanical	↓
Battery Life	~240 shots (CIPA)	~600 shots (CIPA) / ~70min continuous 4K recording	↑
Weight	301g (with battery and card)	699g (body, battery, card)	↓
Weather Sealed	No	Yes	↑
Viewfinder	Pop-up EVF, 2.35M dots	OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made
Screen	3.0" fully articulating touchscreen, 921k dots	3.0" vari-angle touchscreen, 1.44M dots
Mount	Fixed Zeiss Vario-Sonnar T* 24-200mm f/2.8-4.5	Sony E-mount
Memory Cards	Single SD / Memory Stick PRO Duo slot	Dual CFexpress Type A / SD UHS-II (both slots)

Compare side-by-side

See RX100 VI and A7S III next to each other with our interactive comparison tool.

Get a personalised upgrade score

Tell us what you shoot and we'll score the A7S III against your specific genres — not just specs.

Other upgrades from the RX100 VI

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