Examples of diffraction patterns showing particular features

According to https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=CCP4BB;5d3a857c.1507, this pattern arises from disorder caused by "frustrated overconstraint".

You can find similar pattern in Welberry, T. R., et al. "Diffuse scattering resulting from macromolecular frustration." Acta Crystallographica Section B 67.6 (2011): 516-524.

The following review is also interesting, showing that similar physics exists in many different fields: Keen, David A., and Andrew L. Goodwin. "The crystallography of correlated disorder." Nature 521.7552 (2015): 303-309.

If you have DIALS installed on your computer, my dials.rs_mapper program can reconstruct 3D reciprocal space from diffraction images, volume rendering of which is very illustrative.