For a compact camera, the amount of noise that actually appears in your images across the sensitivity range is average. Dynamic range results from the Canon PowerShot SX150 IS also show a good performance with consistant values across the sensitivity range.
A highlight of this camera is the above average performance, with less of a drop in dynamic range than you'd expect from a compact model, showing that this camera is capable of good low light photography and in normal shooting conditions will capture a good amount of both shadow and highlight detail.
As part of our image quality testing for theCanon PowerShot SX150 IS, we've shot our resolution chart.
If you view our crops of the resolution chart's central section at 100% (or Actual Pixels) you will see that, for example, at ISO 100 theCanon PowerShot SX150 IS is capable of resolving up to around 22 (line widths per picture height x100) in its highest quality JPEG files.
Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:
ISO 80, score: 22 (see full image)
ISO 100, score: 22 (see full image)
ISO 200, score: 22 (see full image)
ISO 400, score: 22 (see full image)
ISO 800, score: 20 (see full image)
ISO 1600, score: 18 (see full image)