size of default preview screen.

So Just to round off, I now have the display as good as i think I will ever get it    Screenshot here:-




Fonts at size 14 are relatively clear.  Suit me anyway but if I could reduce the preview window a tad I would be happier (but you cant have everything I suppose )
Bit of a faff getting this screenshot calling up a delay of 15  secs in the SS process in order to switch screens. I could only call up the SS on the desktop then had to switch screens for the shot .