Panasonic lumix g 7 14mm f 4 vs olympus m zuiko 7 14mm f 2 8 pro?

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From Olympus M.Zuiko 7-14mm f/2.8 PRO: Olympus M.Zuiko 7-14mm f/2.8 PRO: A zoom lens by Olympus for Micro Four Thirds cameras, 7-14mm f/2.8. Specs - Maker: Olympus - Focal length: 7-14mm (zoom) - Maximum aperture: f/2.8 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: no - Autofocus: yes What it frames like - On Micro Four Thirds (Micro Four Thirds): like 14-28mm on full frame; f/2.8 gives about the depth of field of f/5.6 there. ...

From Panasonic Lumix G 7-14mm f/4: Panasonic Lumix G 7-14mm f/4: A zoom lens by Panasonic for Micro Four Thirds cameras, 7-14mm f/4. Specs - Maker: Panasonic - Focal length: 7-14mm (zoom) - Maximum aperture: f/4 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: no - Autofocus: yes What it frames like - On Micro Four Thirds (Micro Four Thirds): like 14-28mm on full frame; f/4 gives about the depth of field of f/8 there. ...

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