A film comprising a norbornene (NB) compound addition polymer that is excellent in chemical resistance, optical properties and the like, has a high Tg, a low water absorption ratio and a low linear expansion coefficient, and is soluble in an ordinary solvent.The film comprising a NB compound addition polymer essentially consisting of repeating units derived from NB compound monomers, wherein the addition polymer has a specific Mw and has a sum of the units (A1) and (A2) of 70% by mol or more based on the total units, wherein the molar number of each unit satisfies the following equations: 70/30≦[{(A1)+(A2)}/(B)]≦100 and 10/90≦(A1)/(A2)≦98/2, or the addition polymer has a specific Mw and Mn and essentially consists of the units (A1) and (B), wherein the molar number of each unit satisfies the following equation: 70/30≦[(A1)/(B)] ≦98/2.