Bill has over 30,000 slides he needs to digitize. Leo says that 30,000 slides are untenable to digitize. So Leo recommends triaging and culling that number to a more manageable collection of those he absolutely must archive. Then go to a company like ScanCafe.com. They will not only digitize them, but they will clean them and then save them to a DVD or thumb drive for him to have. He also wants to tag the photos with metadata like when, where, and who. Leo says Camera Bits PhotoMechanic is great for that.
Charles would like to use a Nikon film scanner to scan his collection of slides. Leo says that Nikon Coolscan 5000 is one of the best scanners out there, with a max DPI of 400 PPI. But they're expensive, and he'd still have to clean each slide or have spent a lot of time and money for nothing. Another option is a dual lit scanner by Epson, that comes with a bulk loader. On top of that, scanning takes a lot of time. Leo recommends a service like ScanCafe because for the same price, they'll not only scan your slides, but they'll clean them and color correct as well.
Jim got a slide scanning machine to scan his slides, but he doesn't have software for it. Where can he get it? Leo says that there's a third-party driver called VueScan at Hamrich.com. It's an old-time TWAIN driver that supports a wide array of scanners. You can get it at https://www.hamrick.com. It's worth paying for as well.
Arnie has a bunch of slides that he wants to digitize. Is there something that will take a carousel tray and one by one feed the slide and scan it? Leo says that would be an interesting product, for sure. Leo says he can do that, but taking them to a service like ScanCafe is a better option. Not only is his time worth something, but they'll take the time to clean them up and remove dust. If it's an issue of cost, remember that he'd be buying an apparatus and spending the time. In the end, he's probably paying just as much.
Neil has a ton of family photographs that he'd like to digitize and share with the family, but he's not very computer literate. That's why Leo says to get a service to do it for him. Or he could get a computer and a negative and slide scanner. The Epson V600 Photo Scanner can do it, and it's $229. He'll want one that does 600 DPI or better and does negatives, slides, and prints.