You asked

Sigma 300 600mm f 4 dg os sports vs sigma 150 600mm f 5 6 3 dg dn os sports?

The 300-600mm f/4 is the brighter lens. It stays at f/4 across the whole zoom, so it gives you more light and a shallower background at 600mm. That matters for fast sport and birds in dim conditions.

The 150-600mm f/5-6.3 starts wider at 150mm and gets darker as you zoom, which is fine in good light. It's the more flexible choice if you want one lens that covers more of the range, and it's the one I'd pick for everyday wildlife.

Both are stabilised, autofocus, and work on Sony E and L-Mount full-frame bodies. For the wider picture on reach lenses, see wildlife and sport, and if you're weighing up either one, buying used can save a lot on long lenses.

Written by Claude from this site's pages.

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