To determine the potential benefit to be gained from reduced CL in fast EBEC MicroED data, we used the known counting rate of the Apollo detector and measured electron counts per second for any given pixel to implement a simple CL adjustment. While limited, we hoped the adjustment might approximate closer to true counts from measured values and indicate whether more refined adjustments would be beneficial. The adjustment is determined from estimates of the number of undercounted electrons from numerical simulations (Figure , Supplementary Figures ). As the rate of incoming electrons increases, the number of counts detected per unit time asymptotically approaches the effective maximum count rate per pixel. We estimate that, for the Apollo, this value should be ~266 e -/pix/s.