Not familiar with HP-3570. I prefer the scanning software supplied with Microtek scanners. (Purchased HP slide and snapshot scanners, too.) In 1996 Microtek E3 had a full size transparent media adaptor (TMA) that cost about the same amount as the scanner itself and is bigger than inexpensive modern flatbeds. Dual boot (ME & XP) computer ready to use but I haven't yet connected the E3 to that computer. Main scanner now is a Microtek 5700 but it doesn't have a large area for transparencies. 35mm or smaller cropped area requires a better quality scan than Microtek E3. The TMA light is used for slide or negative scan and the flatbed light is used for normal paper or pictures. I've often used a black paper backing for thin paper items like newspapers. -- Elizabeth ----- Original Message ----- From: "Carl Sachs" > [1] Exactly how does the scan take place when scanning 35mm > negs or slides? > [2] Is the light source used for "normal" flat copy scanning > turned off when scanning film or slides? > [3] Should it be possible to scan old 8" x 10" and 5" x 7" > glass plate negatives using a 12" x 12" light box as the > transmission source, instead of the included film strip and > slide light source? > > Once scanned, it is my intention to make positives by using > the "negative" option for converting the scan. > I realize there are more expensive ($1200+) scanners that > will do the job, but this cost is out of the question for > the small historical society who wishes to make a catalog of > their holdings.