A previous Instructable showed how to measure the horizontal resolution of Ember 3D prints. That resolution is ultimately limited by the size and spacing of the mirrors in Ember's DMD and the filtering applied to the image of each slice to convert them to the DMD's diamond pixel array. The focus of the projected slice images, the properties of the resin, and the settings (e.g. exposure) that control the printing process may further limit resolution. While the number of distinct line pairs per mm that can be printed cannot be increased beyond these fundamental limits, it is possible to represent some features with greater detail than these limits might otherwise suggest.
In the field of lithography, e.g. for semiconductor manufacturing, a variety of such resolution enhancement techniques are used. One of the most well known is Optical Proximity Correction (OPC). In this Instructable we'll see how OPC may be used to improve the fidelity with which fine details may be printed. While printed text is used as an example here, the same technique could be applied in any case where it was desired to make the corners of printed objects sharper.