I've got a couple of film scanners (like for example Nikon Super CoolScan 5000 ED) but for quick results that should be enough for most people to archive a couple of hundret of slides I tend to use Canon 8800F [0]. I wonder if you can buy a scanner today with similar capabilities.
TBH 35mm slides are the biggest pain in terms of time-vs-return out of any format. It's a painstaking process and I could not justify the $5000+ cost for a dedicated high-speed machine. But if the end output is ~300dpi for TV display, etc I may be able to help with a fast option.
Do you, or anyone else here, have any experience with using a slide duplicator on a macro lens with a digital camera, DSLR, for 25 mm slide duplication?
Especially I wonder if you've got advice on picking a useful level of resolution when digitizing slides. I seem to recall that a 35 mm slide contains around 10 megapixel data. If correct, is it at all useful to digitize at a higher resolution for general purpose usage, eg display on a computer or showing slideshows with a digital projector.
Otherwise I'm currently leaning towards digitizing at 4K resolution as a default, given that 4K is 8.2 Mpx.
How does dynamic range come into play? I seem to recall that slide film has a high dynamic range in general.
[0] https://www.usa.canon.com/internet/portal/us/home/support/de...