(Okay, that's a misleading headline, since you also need a camera and a
macro lens as well. But it works and the results are great!)
This method works
much better than the dedicated film scanners that were once available: Using a
24 megapixel camera, you get a larger file size: 6000 x 4000 pixels versus 3779
x 2522 of the Nikon Coolscan LS-2000 (which continues to gather dust under my
desk). If you use an even higher megapixel camera, you can easily see just how unsharp your old film lenses were.
Here's what you need: