Low ISO sensitivity JPEGs
JPEGs look clean through ISO 400, but you can see some slight mangling of details starting at ISO 800.
High ISO sensitivity JPEGs
By ISO 3200, sharp and properly illuminated areas show a little degradation, but shadows look mushy. By ISO 6400, you really don't want to use JPEGs at full size.
ISO 100 JPEG
Sharp areas look a tiny bit soft -- which actually works in its favor -- in the expanded ISO 100 range.
ISO 200 JPEG
Sharp areas can look a little crunchy at ISO 200, the camera's lowest native ISO sensitivity.
ISO 400 JPEG
Sharp areas at ISO 400 look very good.
ISO 800 JPEG
In-focus areas look fine in ISO 800 JPEGs, but you can see noise-suppression artifacts in the out-of-focus areas.
ISO 1600 JPEG
The artifacts in out-of-focus areas are even more pronounced at ISO 1600.
ISO 1600 raw vs. JPEG
You can get much better results in high ISO sensitivity images by processing raw files.
ISO 3200 JPEG
I probably wouldn't use ISO 3200 JPEGs at full size.
Color
Olympus defaults its cameras to the Natural color setting, which delivers pretty accurate results.
White balance
I find the standard white balance produces very cool results indoors, and prefer the setting to preserve warm tones.
50mm lens bokeh
The 50mm f1.8 delivers very nice out-of-focus highlights for the money.
14-42mm lens bokeh
The kit lens delivers pretty typical results.