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We chose three rival cameras for the G3 X to see how it measured up in our lab tests: the Panasonic FZ1000, Sony RX10 and Canon G7 X.
We've carried out lab tests on the G3 X across its full ISO range for resolution, noise (including signal to noise ratio) and dynamic range. We test the JPEGs shot by the camera, but we also check the performance with raw files. Most enthusiasts and pros prefer to shoot raw, and the results can often be quite different.
Canon G3 X resolution charts
We test camera resolution using an industry-standard ISO test chart that allows precise visual comparisons. This gives us numerical values for resolution in line widths/picture height, and you can see how the G3 X compares with its rivals in the charts below.
JPEG resolution analysis: At low sensitivity settings the Canon G3 X compares well with the competition, but its performance drops below the others at higher values.
Raw (converted to TIFF) resolution analysis: There's a bit more detail in the G3 X's raw files, and it's maintained better throughout the sensitivity range.
Sample resolution charts
This is the chart we use for testing camera resolution. The key area is just to the right of centre, where a series of converging lines indicates the point at which the camera can no longer resolve them individually. We shoot this chart at all of the camera's ISO settings, and here are two samples at ISO 200 and ISO 6400.
ISO 200 (JPEG): Click here for a full-size version.
ISO 6400 (JPEG): Click here for a full-size version.
