Om system m zuiko 50 200mm f 2 8 is pro vs panasonic 45 200mm f 4 5 6?

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From OM System M.Zuiko 50-200mm f/2.8 IS PRO: OM System M.Zuiko 50-200mm f/2.8 IS PRO: A zoom lens by OM System for Micro Four Thirds cameras, 50-200mm f/2.8. A weather-sealed 100-400mm-equivalent f/2.8 zoom for wildlife and sport. Specs - Maker: OM System - Focal length: 50-200mm (zoom) - Maximum aperture: f/2.8 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: yes - Autofocus: yes What it frames like - On Micro Four Thirds (Micro Four Thirds): like 100-400mm on full ...

From Sensor sizes: The main sizes: - Full frame (36 x 24mm, the size of a 35mm film frame). The reference size: when people quote a focal length "in full-frame terms", this is what they mean. - APS-C (about 23 x 15mm). Crop factor about 1.5x (1.6x on Canon). Most entry and mid-range mirrorless cameras. - Micro Four Thirds (about 17 x 13mm). Crop factor 2x. Small, light systems from OM System and Panasonic. - 1-inch ...

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