After reading the FWA in the documentation I wonder, is it correct to say that if there is spectral content under 400nm the paper is free for wfa? Like this. I have measured a target with Epson premium luster with an eye-one with –H option. The white patch is like this: SAMPLE_ID RGB_R RGB_G RGB_B XYZ_X XYZ_Y XYZ_Z SPEC_377 SPEC_380 SPEC_383 SPEC_387 SPEC_390 SPEC_393 SPEC_397 SPEC_400 1 100.00 100.00 100.00 82.791 85.972 74.902 55.045 58.125 61.038 63.051 64.483 65.731 66.902 68.408 So my question is, indicating this that this paper doesn't use wfa? Regards Lars Tore Gustavsen