Quick question, won a cibachrome filterset on an auction site for a ridiculous sum (a 1/7th of a dollar...) in hope it could be useful if I venture into RA4 printing in the future. The text didn't say so much except that there were .05-0.5 in all three of C,Y and M.

I'm aware that using a filterbox for colorprinting seems to be a PITA but for this price I can afford to test, rather than to buy a new colorhead.

Useful or not?