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We shoot a specially designed chart in carefully controlled conditions and the resulting images are analysed using DXO Analyzer software to generate the data to produce the graphs below.
A high signal to noise ratio (SNR) indicates a cleaner and better quality image.
For more more details on how to interpret our test data, check out our full explanation of our noise and dynamic range tests.
These graphs compare the LX100 with the Fuji X30, Panasonic LX7 and Sony RX100 III.
JPEG signal to noise ratio
This graph indicates that the LX100 starts off very well at the lower sensitivity settings, but by around ISO800 it starts to dip below the competing cameras. This indicates that the LX100's images have a weaker signal, or more noise. Comparing the JPEG results with those from raw files (after conversion to TIFF) and looking at real world images indicates that it is the in-camera noise reduction that is applied to JPEG images that is responsible for the lower perfromance at higher sensitivity settings.
Raw signal to noise ratio
The LX100 is the clear winner here, showing the benefit of the larger sensor and comparatively low pixel count in comparison with the Sony RX100 III.
JPEG dynamic range
Dynamic range is closely linked with image contrast. On the whole the LX100's images have a pleasing level of contrast and a wide range of tones, though it can benefit from a little underexposure on occasion.
Raw dynamic range
The LX100 has a dynamic range in excess of 12EV for most of its sensitivity range which means that its raw files (after conversion to TIFF) have a greater range of tones than the competing compact cameras.
