I can’t find any other place to ask this, so I’ll try here.
I had several thousand of my in-laws’ slides and negatives professionally scanned recently. Tthere are a lot of the slide mounts with hand-written annotations with names and dates that I would like to capture. So, I came up with something I thought was clever enough. I have a Brother MFC 8710, and I put the slides on the glass plate. I point one of these lights at the bottom of the open scanner lid to bounce light off of it and illuminate the slides. Scanning with xsane works pretty well, and I can see the image of the slide well enough in my scan to match it up with the professional scan. But the slide image is pretty much monochrome.
Here’s an example. This is a scaled down version of the professional scan of a slide:
And here’s my scan of the annotated mount (and the image):
I realize this is a pretty weird thing to do, and the current result is probably adequate. The image is recognizable enough to match it to the full size scan. But if there’s some easy way to improve the color in my scans, I would love to do that. I’ve tried playing with xsane settings and curves. I tried a warmer (4800K) light source. Nothing made any discernible difference. And I’m not sure what would cause the mount to scan in color, but the slide image to turn out monochrome.