Is the panasonic lumix s 18 40mm f 4 5 6 3 good on aps c?

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From Panasonic Lumix S 18-40mm f/4.5-6.3: Panasonic Lumix S 18-40mm f/4.5-6.3: A zoom lens by Panasonic for Full frame cameras, 18-40mm f/4.5-6.3. Specs - Maker: Panasonic - Focal length: 18-40mm (zoom) - Maximum aperture: f/4.5-6.3 (it gets darker as you zoom in) - Made for: Full frame sensors - Mounts: L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (L-Mount): as marked, 18-40mm. - On APS-C (L-Mount): like 27-60mm on full frame; f/4.5-6.3 gives about ...

From Focal length converter: How it works: Multiply the focal length by the sensor's crop factor to get its full-frame equivalent. To go between two smaller formats, multiply by the first crop factor and divide by the second. Crop factors are measured on the sensor diagonal, so formats with a different shape (4:3 against 3:2) frame slightly differently across the width.

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