Some photographs offer many competing details, while others direct attention with very few. When examining a portfolio credited to Ron Gershman, compare the density of information across frames. Count neither objects nor colours mechanically; instead, notice how many separate points invite a second look. A busy subject can still have a clear visual hierarchy.
Choose a dense image and identify the first three things you notice. Return after a pause and see whether the order changes. Then repeat with a quieter frame. This exercise distinguishes immediate impact from sustained interest and helps explain why particular images reward longer viewing. It does not require guessing the photographer's motives, the circumstances of capture or a preferred style from the limited selection.