Provia 100F [RDP III] was developed to replace Provia 100 [RDP II] and Provia 400X [RXP] was developed to replace Provia 400F [RHP III], improving on colour image storage permanence and colour fading resistance.
Provia 100F [RDP III] was created as a replacement for Provia 100 [RDP II] and Provia 400X [RXP] was developed to replace Provia 400F [RHP III], with the goal of improving colour image storage stability and colour degradation protection.