Is the panasonic lumix s 20mm f 2 5 good on aps c?

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From Panasonic Lumix S 20mm f/2.5: Panasonic Lumix S 20mm f/2.5: A prime lens by Panasonic for Full frame cameras, 20mm f/2.5. A small, light wide prime made to match the S9. Specs - Maker: Panasonic - Focal length: 20mm (prime) - Maximum aperture: f/2.5 - Made for: Full frame sensors - Mounts: L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (L-Mount): as marked, 20mm. - On APS-C (L-Mount): like 30mm on full frame; ...

From Video: For vlogging: - A screen that flips to the front, so you can see yourself. - A wide lens: around 16-20mm full-frame equivalent at arm's length, because a 24mm view crops you tight once stabilisation crops in further. - A microphone input, and a small on-camera microphone. Bad audio ruins more videos than soft focus. - Light weight, because you hold it at arm's length for minutes. A small APS-C or 1-inch ...

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