Steven -smunch replied by e-mail....

Steve Chambers thought that the digital stream would be less likely to provide a critical focus indication as would the processed signal deeper in the computer. He is an impressive person with a LOT of smarts!. I will look at the digital A/D stream to see what happens in and out of focus just for knowledge sake. It would be great if there is a visible change 'cause it would allow instantaneous adjustment without waiting for the processed image from the computers long number crunching. (Tried to post earlier...but it got lost somewhere.). -Larry