Panasonic lumix s 24 105mm f 4 macro ois vs sigma 28 105mm f 2 8 dg dn art?

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From Panasonic Lumix S 24-105mm f/4 Macro OIS: Panasonic Lumix S 24-105mm f/4 Macro OIS: A macro lens by Panasonic for Full frame cameras, 24-105mm f/4. Specs - Maker: Panasonic - Focal length: 24-105mm (macro) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: L-Mount - Stabilised: yes - Autofocus: yes What it frames like - On full frame (L-Mount): as marked, 24-105mm. - On APS-C (L-Mount): like 36-158mm on full frame; f/4 gives about the depth of field of f/6 there. ...

From Sigma 28-105mm f/2.8 DG DN Art: Sigma 28-105mm f/2.8 DG DN Art: A zoom lens by Sigma for Full frame cameras, 28-105mm f/2.8. Specs - Maker: Sigma - Focal length: 28-105mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, L-Mount): as marked, 28-105mm. - On APS-C (Sony E, L-Mount): like 42-158mm on full frame; f/2.8 gives about the ...

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