Adjusting the DynaMesh resolution
During the blocking stages it’s good to keep the amount of polygons very low so that we can perform large proportional changes. You’ll notice a few other options under the DynaMesh sub-palette. Select the Resolution slider and reduce the number from 128 to about 32, so the next time you perform a re-DynaMesh action (Ctrl+click drag), ZBrushCore will maintain the shape but with fewer polygons.
With higher resolutions it’s harder to block out the shape. A low resolution or fewer points makes it easier to move larger portions of the mesh. This is the blocking of the larger shapes using just the Move Brush.