Panasonic lumix s pro 16 35mm f 4 vs panasonic lumix s 18 40mm f 4 5 6 3?

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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 Panasonic Lumix S Pro 16-35mm f/4: Panasonic Lumix S Pro 16-35mm f/4: A zoom lens by Panasonic for Full frame cameras, 16-35mm f/4. Specs - Maker: Panasonic - Focal length: 16-35mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (L-Mount): as marked, 16-35mm. - On APS-C (L-Mount): like 24-52mm on full frame; f/4 gives about the depth of field of f/6 there. ...

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