Colour error
We pitched the GX9 against three close rivals – the Canon EOS M5, Fujifilm X-T20 and Olympus PEN-F – and found that all four showed moderate colour error, with the PEN-F the worst.
Signal-to-noise ratio
The GX9 and Fujifilm X-T20 were very close for noise performance, with the Olympus and the Canon a little way behind. Panasonic does seem to have nailed noise control.
Dynamic range
Again, the Panasonic GX9 takes the lead, narrowly beating the X-T20 for dynamic range. The Olympus PEN-F and especially the Canon EOS M5 are a little disappointing here.