Panasonic leica dg 12mm f 1 4 vs panasonic leica dg 9mm f 1 7?

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From Panasonic Leica DG 9mm f/1.7: Panasonic Leica DG 9mm f/1.7: A prime lens by Panasonic for Micro Four Thirds cameras, 9mm f/1.7. Specs - Maker: Panasonic - Focal length: 9mm (prime) - Maximum aperture: f/1.7 - 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 18mm on full frame; f/1.7 gives about the depth of field of f/3.4 there. ...

From Panasonic Leica DG 12mm f/1.4: Panasonic Leica DG 12mm f/1.4: A prime lens by Panasonic for Micro Four Thirds cameras, 12mm f/1.4. Specs - Maker: Panasonic - Focal length: 12mm (prime) - Maximum aperture: f/1.4 - 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 24mm on full frame; f/1.4 gives about the depth of field of f/2.8 there. ...

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