Very nice the second two - good luck with your shooting too - you have a very good eye for this. Along with the Arnold Newman clip which is valuable in understanding cropping to a degree - it's also worth looking at the workings of Directors of Photography in cinema/motion pictures. When a director and a D.P. first start preparing for a shoot - they make the decision on the "aspect ratio" i.e. the frame or crop if you will around which the image content appears. These are some of the most important decisions in the entire shoot. This is never a static or predetermined idea - but quite fluid. There are many to choose from and it is never "one size fits all" as you find out. The choice for a particular aspect ratio not only effects what is in the frame and how you shoot, but how the viewer will react emotionally to what's in the frame etc., etc. These initial conversations are very instructive in making these decisions. You can probably go online and read a number of articles published in American Cinematographer which relay these stories and are worth the read. /B