General view of a μGISAXS experiment. An interesting feature is selected from an optical micrograph (a) and stepwise scanned by μGISAXS (step-size: 5 μm). All patterns of the scan are shown (b), beginning with the first pattern measured in the rennin droplet and then line by line up to the end of the scan in the casein film. Two representative patterns (Yoneda region) measured within (c) and outside (d) the rennin droplet in the casein film are shown for better clarity. Arrows in (c) denote the Yoneda peaks at the exit angles α _f = 0.052° and 0.12°.