An additive manufacturing apparatus , comprising: a plurality of lens assemblies comprising swappable portions configured to provide a plurality of magnification ratios that proportionally increase or decrease a size of an image of an incident light; a mechanical assembly capable of selecting one of the lens assemblies to provide one of the magnification ratios to convert a first image of the incident light to a second image of the incident light according to the one of the magnification ratios; a build platform gantry ; and a plurality of mirrors comprising a precursor mirror , an intermediary mirror , and a final mirror mounted on the build platform gantry and configured to direct the second image of the incident light emanating from one or more of the lens assemblies to a specific location, wherein the final mirror is mounted on a first podium of the build platform gantry which is movable in at least one of a first direction and a second direction different from the first direction, wherein the intermediary mirror is mounted on a second podium of a compensating gantry platform, which is movable in at least the first direction, wherein the incident light travels a first distance from the precursor mirror to the intermediary mirror, wherein the incident light travels a second distance from the intermediary mirror to the final mirror , and wherein the build platform gantry is configured to move the first podium and the second podium to maintain a constant value of a sum of the first distance and the second distance for every position of the first podium and a corresponding position of the second podium. a plurality of lens assemblies comprising swappable portions configured to provide a plurality of magnification ratios that proportionally increase or decrease a size of an image of an incident light; a mechanical assembly capable of selecting one of the lens assemblies to provide one of the magnification ratios to convert a first image of the incident light to a second image of the incident light according to the one of the magnification ratios; a build platform gantry ; and a plurality of mirrors comprising a precursor mirror , an intermediary mirror , and a final mirror mounted on the build platform gantry and configured to direct the second image of the incident light emanating from one or more of the lens assemblies to a specific location, wherein the final mirror is mounted on a first podium of the build platform gantry which is movable in at least one of a first direction and a second direction different from the first direction, wherein the intermediary mirror is mounted on a second podium of a compensating gantry platform, which is movable in at least the first direction, wherein the incident light travels a first distance from the precursor mirror to the intermediary mirror, wherein the incident light travels a second distance from the intermediary mirror to the final mirror , and wherein the build platform gantry is configured to move the first podium and the second podium to maintain a constant value of a sum of the first distance and the second distance for every position of the first podium and a corresponding position of the second podium. <EOS>