Summary: Have this product a few years now, and after buying a new, fast pc decided to take up digitizing slides again. After solving the headaches of installing the HP software under Windows 7 64-bit and running the installation and software as if uner Vista, it all seemed finally to work. But then, imaging slides... I should have remembered why I stopped using this scanner quite some time ago. The software which HP made just sucks.
Summary: I've had mine for about one year. Slide scanning: Unacceptable. B&W negative scanning: Unacceptable. Color neg scanning: passable. Print scanning: Excellent. Removing the glass for cleaning the underside: Nearly impossible. Software for Mac: Unacceptable. Scanning at high resolution: Unacceptable and not recommended by HP. Scanning documents as text: Unacceptable - you'll have to scan it as an image file. If your medium goes into a TMA, the results will be inferior.
Summary: When the 4890 actually scans it does OK. The software is easy to use and has some useful photo editing features. (My skills are limited to home use.) Unfortunately, the 4890 has documented problems running with the Dell Dimension PC's (which I run) and what it takes to scan two photos in a row is not worth the re-booting. I've given up. Already ordered a Canon. The 4890 is for sale "as is.
Summary: This scanner is a disappointment. Scanned color slides (mostly fuji sensia 100) are out of focus, too soft and far too blue. It certainly doesn't live up to my expectations. Scanned documents and pictures are of a better quality.
Summary: i mainly bought it to scan slides. i wondered why the other reviewers said it was slow, now i know: it scans it once for preview and you get 20 dime size photos and you can select all or deselect certain ones or ones that are too dark, you must indivdually select to include in the final scan. then you hit scan and it scans 20 times, one pass for each slide, if your lucky.
Summary: I really need an HP scanner because that is the only brand that does a good job on 3-D objects. My old HP 5300-C scanner was a wonderful device with great software. I finally wore it out after 5 years and 100,000 scans. The 4890 was the only HP I could get my hands on. As far as I can tell, the scanner works great, but the software is a DISASTER!
Summary: Just a warning to those of you with Toshiba Laptops -- this scanner is known by HP not to work with Toshiba laptops, because of a compatibility issue between HP's driver and the specific USB host controller used by Toshiba. There is no known fix for many laptop models; for many others, the only fix is to buy a USB 2.0 PCI card.
Summary: I didn't believe the other reviews. The promise of 4800 dpi and ability to scan 16 slides at a time sounded too good. I had to try it. I'm amazed a company can stay in business making such a bad product. 4800 dpi is a lie for slides. Even at 1200 dpi it still looked bad. The slides are out of focus. The color balance is horrible. Pictures look like an art experiment. Software is horrible. It is huge and amazingly slow and it provides very little function.