Best telephoto lens for the sony a9 iii?

For telephoto on the a9 III, I'd start with wildlife and sport. The body's global shutter means no rolling-shutter wobble on fast action, so a long lens gets the most out of it.

My picks:

• Sigma 300-600mm f/4 DG OS Sports: the fastest of the long lenses here, and my first choice for serious sport.
• Sony FE 200-600mm f/5.6-6.3 G OSS: Sony's own long zoom, a sensible pick if you want a lens made by the camera's maker.
• Sigma 150-600mm f/5-6.3 DG DN OS Sports: the one to try if you want to start a little shorter and keep the kit lighter.

Full-frame telephotos are big and heavy, so think about how far you'll carry them. The sensor sizes page covers that trade-off.

Written by Claude from this site's pages.