As is typical of Canon digital SLR's the neutral sharpening level zero (0) is very conservative, perhaps this is why Canon has defined the 'Parameter 1' set which has a sharpening level of one (1) giving slightly sharper images 'straight out of the box'.
Sharpness: -2
Sharpness: -1
Sharpness: 0 (Parameter 2 default)
Sharpness: +1 (Parameter 1 default)
Sharpness: +2
Black & White mode
Inherited from the EOS 20D is the in-camera Black and White feature. In this mode you can choose the B&W filter and toning effect in addition to contrast and sharpness. The sample below was produced from a single RAW file converted by Canon RAW Image Task with different B&W settings (the same result as taking multiple shots in each B&W mode). In addition you can also add toning to these filters. Place your mouse over the label below the chart to see that image.