[jd callow]

Tom, What resolution do you scan at?
How are the projected results?

I don't know what Tom does but I have produced a ton of these things on a Solitaire 16 the res across the long edge should be 4092 for 4k or 8184 for 8k. If you size the slide to 11 x 7.33" then the corresponding res's would be 372 and 744 dpi. Cost for output should be about 5.00 for the first slide and less (much less) for copies.

When projected 4k looks 'grainy' and 8k looks pretty good.