| AF | Auto Focus |
| ASP | Aspherical lenses. Provides distortion-free images with image reproduction performance equivalent to that of a single focal length lens. Aspherical lenses allow the production of high-quality images from compact, lightweight telephoto zoom lenses. |
| DC | These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus ! including compact and lightweight construction. |
| EX | The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance. |
| IF | Inner Focus. This lens moves the inner lens group or groups without changing the lens' physical length. |