Optical compensation film having reversed wavelength dispersion

An optical compensation film, which is made by solution casting of a polymer blend comprising:

• (a) a nitrated styrenic fluoropolymer and
• (b) a polyimide,
• wherein said optical compensation film has positive out-of-plane retardations that satisfy the relations of 0.7<R(450)/R(550)<1 and 1<R(650)/R(550)<1.25, wherein R(450), R(550), and R(650) are out-of-plane retardations at the light wavelengths of 450 nm, 550 nm, and 650 nm respectively and wherein the nitrated styrenic fluoropolymer has a styrenic moiety of:
• wherein R1, R2, and R3 are each independently hydrogen atoms, alkyl groups, substituted alkyl groups, or halogens, wherein at least one of R1, R2, and R3 is a fluorine atom, and wherein n is an integer from 1 to 5 representing the number of the nitro group(s) on the styrenic ring.