K2 Summit reduces noise and improves signal: Thon rings from amorphous carbon | Gatan, Inc.
Oli B. Clarke on Twitter: "Fitting low res Thon rings gives bad fit for H2O rings. Fitting water rings gives bad fit for low res. Two effective defocus values? #cryoem https://t.co/YsCUKOQShF" /
Thon rings from amorphous ice and implications of beam-induced Brownian motion in single particle electron cryo-microscopy - ScienceDirect