Re: Nikon Scan V Autofocus question
Go to edit > preferences then select Preveiw settings and make sure the Auto focus box is ticked. This will ensure that it always autofocuses without having to press the autofocus button again, you then only need to use the autofocus button if you alter the focus point because it is on part of the image (eg blank sky/white wall) where it can not focus correctly and you are not satisfied with the focus point.
By the way I much prefere to use Vuescan with my Coolscan V rather than the Nikon software.
Keep on snapping and catch the moment if you can.
Paul