chalk tip #28: improving focus point placement near tissue edges

Greetings! - today brings another ScanScope scanning tip.  You can improve focus point placement on tissue edges by setting the MacroFocusPointRadius parameter to a negative value.

The pictures at right show the difference in focus point placement on a small region of a specimen when the MacroFocusPointRadius parameter is changed.  The picture on top has a setting of +60, you can see the focus points are away from the edges.  The picture on the bottom has a setting of -60, which puts the focus points right on the edges.

If you find you want to change this value often for different kinds of slides, you can create a parameter set so you can easily toggle between values.

Happy scanning!