Group 1 - The article discusses the transition from still photography to cinematography, highlighting the challenges photographers face when adapting to the cinematic environment [2][4] - It emphasizes the importance of understanding the differences in focusing techniques between photography and cinema, particularly in terms of precision and workflow [4] - The article mentions specific issues encountered with Sirui anamorphic lenses, particularly the problem of achieving infinity focus on certain camera models [3][4] Group 2 - The article outlines the evolution of cinematography as a distinct field, despite sharing foundational principles of optics and light with still photography [4] - It notes that autofocus systems commonly used in still photography differ from the manual focusing techniques often required in cinematography [4]