I am addressing this to those among us who use k1000 hopefully the latest version with the opticbook 3800 scanner on 64-bit windows 7 machines. Have you tried experimenting with brightness under static threshold. Do you notice any differences in quality between setting 1, setting 99 or setting 50? I have done this experiment and the output isn't noticeably different. I would expect to get very poor results or no results at all under setting 1 or setting 99. I did this experiment because I was getting very unusual brightness resultgs when running the k1000 optimizer. I would get static which I hoped for but brightnesses of 70 or 75 or higher which weren't normal at all. Using the opticbook 3600, I would get brightnesses of 58 to 62 or 63. I would appreciate your thoughts on this,.