| Term 
 | Definition 
 
        | Extra Low Dispersion glass, this is the Nikkon term for more expensive glass that is better with color and sharpness |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | This refers to an auto focus lens with a built in silent wave focus drive.  An AF-S lens is very fast and quiet. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Nikons new term for a lens coating that reduces internal reflection. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Nikons version of lens shift technology.  The lens senses when the camera is unsteady and elements withing the lens shift to corrrect the vibration. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | What Nikon calls a macro lens. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The D indicates that the lens has an incorporated cpu that communicates with the camera about distance information.  This is especially important for measuring flash output. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The G refers to modern Nikkor lenses that do not have an aperture ring.  The aperture on these lenses must be set electronically via the camera dials. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | This is Nikon's term for a full frame sensor or a sensor that is equal or near equal to 35mm film. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Apochromatic glass is typically considered to be better at displaying accurate colors.  APO glass is also typically more expensive than standard glass lenses. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Auto Focus lenses are able to focus via an in camera drive or a seperate lens drive. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Manual Focus lenses must be focused by hand, usually by turning part of the lens barrel. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Internal Focus, this means the lens barrel will not rotate while focusing.  IF is especially important when using filters such as a polarizer. |  | 
        |  |