When imaging in real space, a DED can anticipate a nearly flat illumination across its surface. In this mode, it must count individual events landing at a given rate, with relatively equal likelihood, on any one of its pixels . This allows interpretable images to be recorded at low flux, with a limited dynamic range detector. By contrast, diffraction from highly ordered crystals requires accurate counting across a wide dynamic range. A large number of electrons must be accurately counted at highintensity reflections, while single electrons must be registered at the weakest reflections.