Nikon af s dx 17 55mm f 2 8g if ed vs nikon 18 55mm f 3 5 5 6?

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From Nikon AF-S DX 17-55mm f/2.8G IF-ED: Nikon AF-S DX 17-55mm f/2.8G IF-ED: A zoom lens by Nikon for APS-C cameras, 17-55mm f/2.8. Nikon's pro DX standard zoom: big and heavy. Specs - Maker: Nikon - Focal length: 17-55mm (zoom) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Nikon F - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Nikon F): like 26-82mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. ...

From Nikon AF-S DX 18-300mm f/3.5-6.3G ED VR: Nikon AF-S DX 18-300mm f/3.5-6.3G ED VR: A zoom lens by Nikon for APS-C cameras, 18-300mm f/3.5-6.3. A DX travel superzoom.

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