Regarding the SS4000 and extra negative carriers, it would not be a waste of money if you want to buy a second one and have it loaded and ready to go when the first one finishes. Each negative carrier holds 6 frames. Make sure that you don't allow dust to settle on the film in the one that's waiting. You could cover it up with a clean piece of paper.
In a message dated 10/8/2001 11:29:06 AM Pacific Daylight Time, mark@otway.com writes:
I've got another quick question: I see I can buy a 35mm negative strip
holder for $13. Since all my negs are cut into strips, I'll need at
least one of these. However, presumably to speed up processing of a
large number of strips it might be prudent to get a couple more, so I
can have then pre-loaded and ready-to-go? Or will I be wasting money?