Upgrade Guide

Sony Sony FX30→Sony A7S III

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

You own

Sony

Sony FX30

£1799

2022

→

Upgrade to

Sony

A7S III

£2999 (+£1,200)

2020

⚖️

Situational

One clear hardware improvement over the Sony FX30. Worth it if that specific upgrade aligns with what you shoot.

What's new in the A7S III

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	Sony FX30	A7S III
Price	£1,799	£2,999
Released	2022	2020	↓
Sensor	26.1MP APS-C BSI Exmor R CMOS	12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated)
Resolution	26MP	12MP	↓
Video	4K/120p, 4K/60p S-Log3, 1080p/240p	4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p
Autofocus	Real-time tracking AF, 759-point phase-detect	Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition
Stabilisation	5-axis Active IBIS	5.5-stop IBIS
Burst Rate	20fps electronic	10fps mechanical	↓
Battery Life	740 shots (CIPA)	~600 shots (CIPA) / ~70min continuous 4K recording	↓
Weight	579g body only	699g (body, battery, card)	↓
Weather Sealed	Yes	Yes
Viewfinder	None (EVF optional via XLR handle)	OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made
Screen	3.0" fully articulating touchscreen	3.0" vari-angle touchscreen, 1.44M dots
Mount	Sony FE (E-mount)	Sony E-mount
Memory Cards	Dual CFexpress Type A / SD UHS-II	Dual CFexpress Type A / SD UHS-II (both slots)

Compare side-by-side

See Sony FX30 and A7S III next to each other with our interactive comparison tool.

Get a personalised upgrade score

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