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RX100 vs RX100 IV

Quick take: The RX100 has the highest resolution at 20MP; the RX100 is the most affordable.

16 specs side by side·12 genres scored·UK prices from Wex Photo Video and Clifton Cameras

How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.

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Full specificationsthe better value in each row is highlighted
Specification RX100Sony · 2012RX100 IVSony · 2015
Price £74 usedBest£300 used
Sensor 20.2MP 1-inch CMOS20.1MP 1-inch CMOS
Resolution 20.2MPBest20.1MP
Video Full HD 1080p/604K/30p (XAVC S), 1080p HFR up to 960fps, S-Log2
Autofocus 25-point contrast-detect AF with face detection25-point contrast-detect AF, Eye AF, Lock-on AF
Stabilisation Optical SteadyShot (in the lens), no IBISOptical SteadyShot (in the lens), no IBIS
Burst Rate 10fps (focus fixed at the first frame)16fps (5.5fps with AF)Best
Battery Life ~330 shots (CIPA)Best~280 shots (CIPA)
Weight 240g (with battery and card)Best298g (with battery and card)
Dimensions 101.6 × 58.1 × 35.9mm101.6 × 58.1 × 41mm
Weather Sealed Not weather sealedNot weather sealed
Viewfinder No viewfinderPop-up OLED EVF, 2.36M dots
Screen 3.0" fixed LCD, 1.23M dots3.0" LCD, 1.23M dots, tilts 180° up
Mount Fixed Zeiss Vario-Sonnar T* 28-100mm f/1.8-4.9Fixed Zeiss Vario-Sonnar T* 24-70mm f/1.8-2.8
Memory Cards Single SD / Memory Stick slotSingle SD / Memory Stick slot
Connectivity Micro USB, micro HDMI, Eye-FiMulti / micro USB, micro HDMI (4K out), Wi-Fi, NFC

Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.

How they score by genreengine base scores out of 10
Genre
RX100
RX100 IV
Portrait
3.3/10
4.0/10
Street
6.3/10
7.1/10
Travel
6.0/10
6.3/10
Wedding & Events
2.2/10
2.6/10
Documentary
3.3/10
3.9/10
Landscape
3.9/10
4.2/10
Casual
4.0/10
4.2/10
Food
3.6/10
4.4/10
Macro
2.9/10
3.4/10
Architecture
3.6/10
4.3/10
Astrophotography
2.6/10
2.8/10
Filmmaking
—
4.0/10

Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →

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