snberk,
ok. it does have a light. a strip that sits in the middle of the lid and glass plate.
not sure how to call the bad scans. they look like newspaper quality instead of photo quality when you examine the images closely. the gradations aren't smooth. but it varies. sometimes it's ok and sometimes it's not.
i'll try some of your advice when i get a chance.
thanks.
What software are you using? I'd have to go look it up to get it the right way 'round, but.... IIRC, you are not supposed to use ICE (the auto clean up routine) in scanning software for ... it's either BW or Colour film, I forget. But film structure in one of those messes up the ICE routines.
Do some reading on this, lots of info on the web, maybe even the SW Help files. I think some companies call ICE by different names, but it's the feature that "cleans up" scratches and dust spots. The film structure can be confused for these unwanted artifacts.
Or just turn off the ICE, and see if it helps.
Also, make sure you tell the SW you are scanning "transparencies" or "film" and not "reflective". That way the light in the lid (I assume you mean the light that is inside the lid, when it's closed, and not on top that is entirely decorative?) passes through the film.
Also, make sure you are scanning with a high enough resolution. To get any decent sized prints from a small negative, the scan must be at high resolutions. As an example. If the neg is one inch across, and you want a print/file that is 300 dpi and 10 inches across you will need to scan at 3000 dpi. The best results are an optical resolution of 3000 dpi. Otherwise the scanner is doing the same thing as you Preview is if you decide to upscale an image. It has to interpolate (i.e. guess at) what the new pixels should be.