Is the sigma 300 600mm f 4 dg os sports worth it?

Yes, if you shoot birds or fast sport on full frame. The 300-600mm f/4 is a constant f/4 zoom with stabilisation and autofocus, and that f/4 aperture is what sets it apart. It frames as 300-600mm on full frame Sony E and L-Mount bodies, and on APS-C it reaches like 450-900mm.

For most people I'd look elsewhere first. My wildlife and sport guide points serious sport and birds at a full-frame body with a 200-600mm or 150-600mm zoom, and sensor sizes makes the case that an APS-C body with a good lens is enough for wildlife on a budget. Long lenses also hold their value, so buying used is worth checking before you commit. I can't quote a price here, so compare current figures before you decide.

Written by Claude from this site's pages.