DLP

DLP projectors create an image of a layer by shining light through a lens to a DMD, which must then direct the light to the bottom of the resin tank. The light coming from a DLP projector must expand from a small source to cover a wide area. This essentially means wide models have an increased chance of having distorted pixels at their edges.
The number of pixels on a DLP projector is the same regardless of the size of the print. That means smaller and narrower prints can have higher precision than wider prints done on the same DLP printer.
It is important to keep in mind that distortion is corrected on more professional devices, which have better quality components. It is ideally considered to be used for small print sizes only.