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Sigma 60 600mm f 4 5 6 3 dg dn os sports vs panasonic 100 500mm f 5 7 1?

I don't have a page for the Panasonic 100-500mm f/5.7-6.3 on cst1 likes cameras, so I can't compare it fairly. I'd rather not guess at its specs or price.

Here's what I can tell you about the Sigma. It's a stabilised, autofocus zoom that covers 60-600mm on full frame, and it fits Sony E and L-Mount bodies. On APS-C it frames like 90-900mm. Its aperture drops from f/4.5 to f/6.3 as you zoom in, so keep your shutter speed up at the long end. You can read the full details on Sigma 60-600mm f/4.5-6.3 DG DN OS Sports.

If you're choosing between long zooms, Wildlife and sport explains how much reach you need, and my picks suggests setups by budget. Buying a long lens used can save a lot, so see buying used.

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