Sony fe 16 35mm f 2 8 gm vs sony fe pz 16 35mm f 4 g?

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From Sony FE 16-35mm f/2.8 GM: Sony FE 16-35mm f/2.8 GM: A zoom lens by Sony for Full frame cameras, 16-35mm f/2.8. Specs - Maker: Sony - Focal length: 16-35mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E): as marked, 16-35mm. - On APS-C (Sony E): like 24-52mm on full frame; f/2.8 gives about the depth of field ...

From Sony FE PZ 16-35mm f/4 G: Sony FE PZ 16-35mm f/4 G: A zoom lens by Sony for Full frame cameras, 16-35mm f/4. Specs - Maker: Sony - Focal length: 16-35mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Sony E - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E): as marked, 16-35mm. - On APS-C (Sony E): like 24-52mm on full frame; f/4 gives about the depth of field ...

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