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19 of 19 people found the following review helpful:
2.0 out of 5 stars
Professional-grade scanner, except for the imaging quality., September 4, 2002
Microtek has a genuine professional pedigree; for years I saw Microtek scanners at the newspapers I worked for. And the 4900 has the apprearance of being a professional model, with sophisticated adjustments for tweaking color, etc. It also has some great features for amateurs, such as seven buttons on the scanner that can be customized, so that you could, for example, scan the same photo at 100 dpi, 300 dpi, 600 dpi, 48-bit, 24-bit, tif and jpeg, all without fiddling with the computer. But the instructions are not written for amateurs, and many features are not clearly explained. The program seems to default to allowing multiple frames, with the result that I got several crop lines on the preview screen I could not get rid of, and multiple images each time I scanned. But don't try looking up "crop" or "auto crop" in the help section - they aren't there. I tried to find out more on the Microtek web site, but it was down. Earth to Microtek: Look at each of your screens and each of the functions on each screen and write instructions for how to use them for your help section, not just a one-sentence label of what they are. The bottom line is quality, and the images are not up to par for professionals. I tried using the film adapter and found it worthless, unable to produce sharp images. But what is worse, I discovered that there was heavy horizontal and vertical streaking. At the maximum optical resolution of 2,400 dpi the vertical streaking was about six pixels wide, and was obvious even on the small preview image. This streaking was typically down to about two pixels wide at 1,200 dpi, and was still visable at 600 dpi. When I switched to a grayscale scan it was even more obvious, meaning the light sensitivity of the CCD sensors was inconsistent. There was also horizontal streaking, though less obvious. When I switch to scanning an opaque subject, the streaking was not quite as obtrusive, but still obvious if you knew what to look for. Since the streaking is visable at 600 dpi, this means the useable resolution of this 2,400 dpi optical scanner is only 300 dpi. At this rate, the images are not even up to par for amateurs. The color of the scans was good, but I would not call it professional. And it did not seem to me to be exceptionally sharp. Scans are fast, but the scanner is slow to respond, so total time is not so good. Loading the driver after clicking on the icon is agonizingly slow on my 566 mhz Celeron, and there is no "wait" icon. The OCR program is the worst I have ever tried to use, and I've owned three other scanners. This may be the right scanner for some people. Basic functions are easy to use - if the scanner does not default to some cryptic mode. But anything more will take several days of experimentation to learn, unless you are a professional. I'm not, and this scanner is going back.
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