Sony fe 100 400mm f 4 5 5 6 gm oss vs sony 100 400mm f 4 5?

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From Sony FE 100-400mm f/4.5-5.6 GM OSS: Sony FE 100-400mm f/4.5-5.6 GM OSS: A zoom lens by Sony for Full frame cameras, 100-400mm f/4.5-5.6. Specs - Maker: Sony - Focal length: 100-400mm (zoom) - Maximum aperture: f/4.5-5.6 (it gets darker as you zoom in) - Made for: Full frame sensors - Mounts: Sony E - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Sony E): as marked, 100-400mm. - On APS-C (Sony E): like 150-600mm on full frame; ...

From Sony FE 100-400mm f/4.5 GM OSS: Sony FE 100-400mm f/4.5 GM OSS: A zoom lens by Sony for Full frame cameras, 100-400mm f/4.5. A constant f/4.5 telephoto zoom for sport and wildlife, sold alongside the older f/4.5-5.6.

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