I have around 3000 slides (many Kodachrome) and probably a similar amount of negatives. I use a Plustek 7200 film scanner scanning at 4350DPI, a resolution I found best for this scanner with not too big a file size but still over 100MB per scan. Its about 2 minutes a scan (48 bit colour), more if I want multip-pass and longer again if I want dust removal during scan. I used to scan at 5400DPI and 24bit colour but the extra bit rate helps with dynamic range.
I use Silverfast Ai Ver.6. I would like to upgrade to a newer version of Silverfast but need to upgrade my hardware which I am thinking of doing to the Plustek 8300 or another product. Note Silverfast is licenced per hardware so swapping hardware requires a new version of Silverfast and the new version of Silverfast doesnt support older hardware. I have had my scanner since Windows XP days and it can be made to work under Windows 10 with a few tricks. There is other software available which I tried but I prefer silverfast Ai.
I also use the IT8 calibration target (Extachrome and Kodachrome) as well as the USAF resolution target.
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