Figure 1. Assessment of particle movement and SSNR through the use of movie frames.

(a) Histogram showing particle movements assessed by comparing three-frame averages from the beginning, middle and end of each movie. The cumulative exposure was ~53 e⁻ Å⁻² accumulated over 1.5 s. (b) Left, a magnified portion of a summed frame (2–12). Right, the 1D SSNR of 92 BMV particles computed from that frame. (c) Same as b, from summed frames 2–36. (d) Same as c, from summed frames 2–36, with damage compensation for each frame.