Upgrade Guide

Sony RX100 III→Sony RX100 IV

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

You own

Sony

RX100 III

£275 used

2014

→

Upgrade to

Sony

RX100 IV

£300 used (+£25)

2015

✅

Worthwhile

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

What's new in the RX100 IV

Unchanged or similar

Suitability by genre

Base scores — computed from verified specs for an enthusiast shooting photo and video. The Upgrade Checker adjusts them for your skill level.

Full spec comparison

Spec	RX100 III	RX100 IV
Price	£275 used	£300 used
Released	2014	2015	↑
Sensor	20.1MP 1-inch CMOS	20.1MP 1-inch CMOS
Resolution	20MP	20MP
Video	Full HD 1080p/60 (XAVC S)	4K/30p (XAVC S), 1080p HFR up to 960fps, S-Log2
Autofocus	25-point contrast-detect AF, Eye AF, Lock-on AF	25-point contrast-detect AF, Eye AF, Lock-on AF
Stabilisation	Optical SteadyShot (in the lens), no IBIS	Optical SteadyShot (in the lens), no IBIS
Burst Rate	10fps (2.9fps with AF-S per frame)	16fps (5.5fps with AF)	↑
Battery Life	~320 shots (CIPA)	~280 shots (CIPA)	↓
Weight	290g (with battery and card)	298g (with battery and card)	↓
Weather Sealed	Not weather sealed	Not weather sealed
Viewfinder	Pop-up OLED EVF, 1.44M dots	Pop-up OLED EVF, 2.36M dots
Screen	3.0" LCD, 1.23M dots, tilts 180° up	3.0" LCD, 1.23M dots, tilts 180° up
Mount	Fixed Zeiss Vario-Sonnar T* 24-70mm f/1.8-2.8	Fixed Zeiss Vario-Sonnar T* 24-70mm f/1.8-2.8
Memory Cards	Single SD / Memory Stick slot	Single SD / Memory Stick slot

Compare side-by-side

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

Get a personalised upgrade score

Tell us what you shoot and we'll score the RX100 IV against your specific genres — not just specs.

Other upgrades from the RX100 III

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Camera family history