A light projection device for visually producing on a viewing screen an image intended to be printed on a printing substrate using a set of inks, the device comprising: a light source configured to emit substantially white light; at least four color filters, wherein substantially white light passing through each of said at least four color filters produces light having a different one of at least four primary colors, respectively, the at least four color filters comprising a first set of color filters and a second set of color filters wherein: each of the first set of color filters is configured to produce light of a first set of primary colors, each primary color of the first set of primary colors substantially matching the transmission spectrum produced by light passing through each ink, respectively, of the set of inks; and each of the second set of color filters is configured to produce light of a second set of primary colors, each primary color of the second set of primary colors substantially matching the transmission spectrum produced by light passing through combinations, respectively, of two or more inks of the set of inks; at least one correction filter; a converter configured to convert input data defining the image to be printed using the set of inks into converted data corresponding to at least one of the at least four primary colors; a first controller (206, 207) configured to determine an additive linear combination of said light of said at least four primary colors for each portion of the image; and a viewing screen configured to display the image data according to said additive linear combination from said first controller (206, 207), wherein said at least four color filters and said at least one correction filter are arranged between said light source and said viewing screen such that any light emitted by said light source passes through said at least one correction filter and only a single one of said at least four color filters before reaching the viewing screen, wherein the at least one correction filter comprises a transmission spectrum for correcting for either or both of the following: (a) a spectrum reflected from a type of printing substrate on which said image is intended to be printed; and (b) a spectrum of a light source intended for viewing the printed matter. a light source configured to emit substantially white light; at least four color filters, wherein substantially white light passing through each of said at least four color filters produces light having a different one of at least four primary colors, respectively, the at least four color filters comprising a first set of color filters and a second set of color filters wherein: each of the first set of color filters is configured to produce light of a first set of primary colors, each primary color of the first set of primary colors substantially matching the transmission spectrum produced by light passing through each ink, respectively, of the set of inks; and each of the second set of color filters is configured to produce light of a second set of primary colors, each primary color of the second set of primary colors substantially matching the transmission spectrum produced by light passing through combinations, respectively, of two or more inks of the set of inks; at least one correction filter; a converter configured to convert input data defining the image to be printed using the set of inks into converted data corresponding to at least one of the at least four primary colors; a first controller (206, 207) configured to determine an additive linear combination of said light of said at least four primary colors for each portion of the image; and a viewing screen configured to display the image data according to said additive linear combination from said first controller (206, 207), wherein said at least four color filters and said at least one correction filter are arranged between said light source and said viewing screen such that any light emitted by said light source passes through said at least one correction filter and only a single one of said at least four color filters before reaching the viewing screen, wherein the at least one correction filter comprises a transmission spectrum for correcting for either or both of the following: (a) a spectrum reflected from a type of printing substrate on which said image is intended to be printed; and (b) a spectrum of a light source intended for viewing the printed matter. (a) a spectrum reflected from a type of printing substrate on which said image is intended to be printed; and (b) a spectrum of a light source intended for viewing the printed matter.