Smooth Acid Free Base Ultra White. FibaPrint Ultra Smooth Gloss has been modeled on the traditional fiber-based material used in conventional photography, and is the latest addition to the family of FibaPrint papers. It boasts a surface 'as close to any traditional Fibre photo paper as I have seen quoted one photographer. It's ultra glossy, Ultra white and Ultra smooth surface give it a truly unique quality. Acid inhibiting crystal layer technology Extremely large color gamut D-max rating of 2.7.