NOVELTY - A blend comprises a first copolymer and a second copolymer, each of the copolymers being chemically distinguishable and obtained by copolymerization of ethylene, each independently with other comonomer(s), which is independently an ethylenically unsaturated carboxylic acid or its derivative.    USE - The blend is for a film useful for a photovoltaic cell module (claimed). The film is used as encapsulants for photovoltaic (solar) cells. It is for use in combination with glass or clear plastic, to make optically clear or transparent laminate articles, laminated windows, or safety glass.    ADVANTAGE - The film is more flexible than would be expected, based on the moduli of the component polymers, and yet without a sacrifice in the optical clarity that would be expected from blending two chemically distinguishable materials. The optical clarity is very close to that of the clearer component in the mixture. The film has a modulus as measured according to ASTM D882-01, which is less than that which would be predicted from a composition weighted average of the moduli of films obtained, by producing films individually from the first copolymer and the second copolymer and further optional copolymers alone. It has excellent adhesion.    DETAILED DESCRIPTION - A blend comprises a first copolymer and a second copolymer, each of the copolymers being chemically distinguishable and obtained by copolymerization of ethylene, each independently with other comonomer(s), which is independently an ethylenically unsaturated carboxylic acid or its derivative, and where a film obtained from the blend has a secant modulus of less than 15000 pounds/square inch (psi), as measured according to ASTM D882-01, and transmits greater than or equal to85% of incident visible light, and/or has a haze value of less than or equal to6% as measured according to ASTM D1003-00. An INDEPENDENT CLAIM is also included for a photovoltaic cell module that comprises an encapsulant layer(s) comprising an optically transparent film, including a blend of a first copolymer, a second copolymer, and optional further copolymers, each of the copolymers being chemically distinguishable and obtained by copolymerization of ethylene each with other comonomer(s).