Step 1: Understand the relationship between focal length and field of view.
- Lower focal lengths produce wider fields of view.
- Higher focal lengths produce narrower fields of view.
Step 2: Analyze the images.
- Image 4 has the widest field of view (lowest focal length).
- Image 2 has the narrowest field of view (highest focal length).
Step 3: Arrange in ascending order.
\[
{2, 4, 1, 3}
\]