Olympus m zuiko 17mm f 2 8 vs yongnuo yn17mm f 1 7m?

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From Olympus M.Zuiko 17mm f/2.8: Olympus M.Zuiko 17mm f/2.8: A prime lens by Olympus for Micro Four Thirds cameras, 17mm f/2.8. A thin pancake lens from the early PEN kits. Specs - Maker: Olympus - Focal length: 17mm (prime) - 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 34mm on full frame; f/2.8 ...

From Yongnuo YN17mm f/1.7M: Yongnuo YN17mm f/1.7M: A prime lens by Yongnuo for Micro Four Thirds cameras, 17mm f/1.7. Specs - Maker: Yongnuo - Focal length: 17mm (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 34mm on full frame; f/1.7 gives about the depth of field of f/3.4 there. ...

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