Sony Cyber-shot DSC-RX100 IV Review – Image Quality: Detail and Noise

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For such a small camera, the RX100 IV resolves impressive detail from its 1-inch sensor. Set to the expanded ISO 100 setting the sensor resolved around 3,000 l/ph. The resolution starts to drop below this figure beyond ISO 400, with 2,800l/ph being recorded at ISO 800. Noise reduction starts to come into play at ISO 1,600 in JPEG files where 2,600 l/ph were resolved. At its ISO ceiling (ISO 25,600) the RX100 IV recorded 2,400 l/ph.

Sony RX100 IV_res_80
Sony Cyber-shot RX100 IV Resolution ISO 80
Sony RX100 IV_res_100
Sony Cyber-shot RX100 IV Resolution ISO 100
Sony RX100 IV_res_200
Sony Cyber-shot RX100 IV Resolution ISO 200
Sony RX100 IV_res_400
Sony Cyber-shot RX100 IV Resolution ISO 400
Sony RX100 IV_res_800
Sony Cyber-shot RX100 IV Resolution ISO 800
Sony RX100 IV_res_1600
Sony Cyber-shot RX100 IV Resolution ISO 1600
Sony RX100 IV_res_3200
Sony Cyber-shot RX100 IV Resolution ISO 3200
Sony RX100 IV_res_6400
Sony Cyber-shot RX100 IV Resolution ISO 6400
Sony RX100 IV_res_12800
Sony Cyber-shot RX100 IV Resolution ISO 12800

Noise

With the RX100 IV’s Raw files not being supported by Adobe Camera Raw at the time of testing, we reverted to using Capture One Pro v8.3.2 to process our images. As can be seen below, very smooth results are created from raw files right up to ISO 800, with luminance noise starting to creep in at ISO 1600. Detail holds up very well at ISO 3200 and although finer details are’t as well resolved at ISO 6400, you could push to this setting and achieve a useable result in an emergency.

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Those who want to preserve the very best image quality will want to ensure they’re shooting in raw and use the camera between ISO 80-800, only pushing to ISO 1600-3200 when low-light conditions insist that you must. Colour noise is also more obvious in JPEG images at ISO 6400 and 12,800 than it is in Raw files.

RX100 IV RAW ISO 80
Sony Cyber-shot RX100 IV Noise, Raw ISO 80
RX100 IV RAW ISO 100
Sony Cyber-shot RX100 IV Noise, Raw ISO 100
RX100 IV RAW ISO 200
Sony Cyber-shot RX100 IV Noise, Raw ISO 400
RX100 IV RAW ISO 800
Sony Cyber-shot RX100 IV Noise, Raw ISO 800
RX100 IV RAW ISO 1600
Sony Cyber-shot RX100 IV Noise, Raw ISO 1600
RX100 IV RAW ISO 3200
Sony Cyber-shot RX100 IV Noise, Raw ISO 3200
RX100 IV RAW ISO 6400
Sony Cyber-shot RX100 IV Noise, Raw ISO 6400
RX100 IV RAW ISO 12800
Sony Cyber-shot RX100 IV Noise, Raw ISO 12800

Score

Score in detail

  • Features 90
  • Build/Handling 80
  • Metering 90
  • Autofocus 80
  • AWB colour 90
  • Dynamic Range 80
  • LCD Viewfinder 90