I charge per scan, which is motivation for me to work efficiently. And of course, clients expect quality, so I have to deliver great work. I usually scan 600-650 pieces per hour for any format. If there’s a slow batch such as negs that are hard to remove from sleeves I can still do 300-350 per hour. The other night I need a speed test where I hand-brushed every negative (but didn’t organize them in subfolders) and I was able to capture 800 an hour.
Prints, slides, and black and white negs are post-processed quickly and easily with Lightroom without much effort. Post-processing color negs with the Negative Lab pro plugin is more tedious and I can normally do about 400 per hour.