If the original photograph was a little blurred (out of focus or
affected by camera movement) then Paint Shop Pro can be used to make the image appear
sharper. This is a very useful trick, but of course it has its limits for it
cannot add detail that the original image simply does not contain. The photo
below (Monte Carlo) was taken with a long focal length lens, the kind most
vulnerable to camera shake.

To sharpen the photo, choose one of the following:
Don't forget that you can apply these filters multiple
times if necessary (it may well be necessary when the image is a s
blurred as this one). The last option above, unsharp mask, is much more
complex than the others, and my experiments with it suggest that it is
hard to get a good result with it, so I suggest you stick to 'sharpen'
or 'sharpen more'. But feel free to try the unsharp mask for yourself -
you may find that the following settings give a decent result with this
image: Radius=6, strength=100, clipping=4. Save your image into your own
folder when done.
You may have noticed that the Adjust menu also includes filters
for adding blur to your pictures. This is, of course, less useful than the
sharpening filter but can be successfully applied to selected background areas
to concentrate attention on the main subject. We will try this in a later
project.