Marry, In your case, the scanner does pose large problem. As you know the HP 4P is an old scanner and doesn't support everything that K1K is capable of when optimizing. It gets great images in most instances, but it leaves something to be desired in others. For you optimization is the best choice available. Pratik Pratik Patel Managing Director CUNYAssistive Technology Services The City University of New York ppatel@xxxxxx -----Original Message----- From: bksvol-discuss-bounce@xxxxxxxxxxxxx [mailto:bksvol-discuss-bounce@xxxxxxxxxxxxx] On Behalf Of Mary Otten Sent: Monday, August 16, 2004 5:59 PM To: bksvol-discuss@xxxxxxxxxxxxx Subject: [bksvol-discuss] Re: Corrections list I agree about picking a setting that seems to achieve the best balance when you see occasional errors on both the light and dark side of brightness. My confidence threshhold is set at 98.5,. I must be the only one, or one of the ffew. But I just haven't found 400 dpi and gray scale to be particularly helpful. That might be because my old 4p doesn't actually support 4000 dpi, so when I set k1k for that resolution, there is some slight of hand going on in the background. I also have a tough time holding a big book down for the amount of time it takes to let the scanner do its thing at that setting with gray scale. But when I have tested with gray scale, without 400 dpi, I've found it didn't give me anything better than what I could get with a plain old static threshhold and adjusted brightness. Mary