Panasonic Lumix DMC-G5 review
Noise, resolution and sensitivity
These images show 72ppi (100% on a computer screen) sections of images of a resolution chart, captured using the Leica DG Summilux 25mm f/1.4 Asph.
We show the section of the resolution chart where the camera starts to fail to reproduce the lines separately. The higher the number visible in these images, the better the camera's detail resolution is at the specified sensitivity setting.
Although the Panasonic Lumix DMC-G5 uses the same sensor as that used in the GH2, results have been improved, most notably at higher ISO values. This could also be a result of the latest processing engine.
At its base ISO sensitivity, the G5 reaches a respectable 28 on our chart with both raw and JPEG files. By ISO 800, this drops to a still reasonable 24, but it then manages to retain this resolving power all the way up to its top ISO 12,800 setting.
This is close to the results from the Olympus OM-D E-M5 at the lower end, but scores better at higher sensitivities.
Noise levels are well controlled in JPEG files, with only slight luminance noise visible through the noise reduction from ISO 3200 and a slight appearance of colour noise at ISO 12,800
The raw files show a greater degree of noise, but it only takes a small amount of adjustment in editing software to remove it so detail can be maintained.
The micro four thirds system is often criticised for the level of detail that can be obtained, especially at higher ISO sensitivities, but while these results might not compare with the 20+-million-pixel sensors, the G5 has greater resolving power than some 16-million-pixel, APS-C cameras.