Sigma 150-600mm
You can take closeup photos of the catcher from center field.
Sigma Contemporary
The Sigma 150-600mm is a low-cost, high-quality outdoor daylight sports photography lens.
Sigma also makes the 150-600mm Sports lens. Although the optics are similar, the Sports lens is weather-sealed, and the lens is much heavier. Unless you want your students to cover the action in the rain, stick with the Contemporary.
TL;DR
The Sigma 150-600mm is a great lens for taking daytime photos at baseball games and soccer matches. The 600mm focal length will allow you to cover action almost anywhere on the field or pitch.
Advantages
- Fantastic quality when you photograph in bright light.
- Fantastic bokeh
Disadvantages
- Does not work in low-light situations.
- An EF-RF converter is required when used with a mirrorless camera.