Olympus m zuiko 75mm f 1 8 vs yongnuo yn42 5mm f 1 7m ii?

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From Olympus M.Zuiko 75mm f/1.8: Olympus M.Zuiko 75mm f/1.8: A prime lens by Olympus for Micro Four Thirds cameras, 75mm f/1.8. Specs - Maker: Olympus - Focal length: 75mm (prime) - Maximum aperture: f/1.8 - 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 150mm on full frame; f/1.8 gives about the depth of field of f/3.6 there. ...

From Yongnuo YN42.5mm f/1.7M II: Yongnuo YN42.5mm f/1.7M II: A prime lens by Yongnuo for Micro Four Thirds cameras, 42mm f/1.7. A cheap autofocus portrait prime for Micro Four Thirds. Specs - Maker: Yongnuo - Focal length: 42mm (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 85mm on full frame; f/1.7 ...

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