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D lenses have an aperture ring on it. G lenses do not so you can adjust the aperture with the dial on the camera instead of on the lens as with the D types.
Sorry, there was a problem. Please try again later.The silent wave motor of the 1.8g will autofocus on Nikon's newer consumer and enthusiast SLRs such as the D3100 and D5100. Additionally, the 1.8g (as do all Nikon G lenses) removes the external aperture dial for an internal camera controlled one, meaning that you cannot manually adjust the aperture on the G lens. This is only particularly relevant when shooting video in live view, as the camera cannot adjust the aperture at that time. Lastly, the 9 bladed aperture design produces a somewhat smoother Bokeh.
Sorry, there was a problem. Please try again later.D: Distance: D-type AF-Nikkor lenses relay subject-to-camera distance information to Nikon SLR cameras that feature 3D Color Matrix Metering, 3D Matrix Metering, and 3D Multi-Sensor Balanced Fill-Flash. G: The lens has no aperture control ring and is designed to be used with cameras that allow setting the aperture from the camera body. G lenses also provide Distance information to the camera.
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