You asked

Panasonic lumix g 14mm f 2 5 ii vs olympus m zuiko 12mm f 2?

Here is what the site says about that.

From Panasonic Lumix G 14mm f/2.5 II: Panasonic Lumix G 14mm f/2.5 II: A prime lens by Panasonic for Micro Four Thirds cameras, 14mm f/2.5. A tiny pancake wide-angle. Specs - Maker: Panasonic - Focal length: 14mm (prime) - Maximum aperture: f/2.5 - 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 28mm on full frame; f/2.5 gives about the depth of ...

From Olympus M.Zuiko 12mm f/2: Olympus M.Zuiko 12mm f/2: A prime lens by Olympus for Micro Four Thirds cameras, 12mm f/2. A small metal 24mm-equivalent wide prime. Specs - Maker: Olympus - Focal length: 12mm (prime) - Maximum aperture: f/2 - 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/2 gives about the ...

Quoted from this site's pages.

From these pages