I discovered today that my spectrolino is too old to simply purchase a new UV filter from Xrite, the unit would have to be shipped to Switzerland and modified to rev C. I may be willing to do that had I not JUST sent it in for recertification. Dumping that much money into it just isn’t an option at this point. Thus I either need to find an old one (the 4.2mm version), or figure out some way of creating my own. My first choice would certainly be picking up a used one… maybe one of you nice folks have one? Barring that, creating my own sounds reasonable enough… take the D65 which I have never used (I know what D65 stands for, but when would one use that filter?), pop the D65 filter out and put my own UV filter in it. Though I have no way to know if it will meet the specs of the original, so when it performs a white point calibration it could be all out of whack if it’s expecting one set of values and receiving another.