Hi, SANE pages say LS-50 (Coolscan V) is "Minimal". Can I ask what exactly this means?
I have a LS-50 and am considering a custom open-source scanning application for a specific purpose of mine. At present I am pretty much completely ignorant about how LS-50 even works, or in fact any scanner, but am planning to learn. I am interested in maximum-quality raw capture out of the scanner and will do my own processing on the data afterwards. So I won't need most auto-* features, and need completely unprocessed colour. The workflow I am interested in: 1) Preview at 64-bit RGBI at 1000 dpi. Auto-focus on app-specified x/ y point. If strip film feeder, preview all frames in one go. Detect film ends, frame position if possible, or provide app enough information to do so. If it's possible to scan entire strip in one go, works well for me, but I can do per-frame processing too. Return unprocessed raw RGBI data. 2) Do app processing on the info, including: identify frames and/or select frame positions; identify frames to scan; identify auto-focus point for each frame; identify exposure parameters. 3) Scan at 64-bit RGBI at 4000 dpi: scan each of the selected frames N times each with N different exposure settings, returning back unprocessed raw RGBI data for each scan. Again scanning entire strips in one go is fine, as is working frame at a time. (Q: how accurate is the step motor movement?) I would handle all exposure and colour conversion myself. I will do full-frame scans so don't need to select a crop area to scan. I will do multiple exposures of each frame. I am looking for having complete control over exposure settings so they are deterministic across frames (no auto-* except for focus). I was reading coolscan3.c source code but it wasn't obvious to me which features on LS-50 are supported or not supported, or how it interacts with the strip film feeder. I expect to code whatever is missing if I go ahead with this project; I am just looking to find out what exists and what is missing, and what is known about LS-50 commands or behaviour. Lassi
