| AF | Auto Focus |
| APO | APO Lens. APO lens has been made using special low-dispersion (SLD) glass and is designed to minimize color aberration. |
| 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. |
| DG | These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs. |
| RF | Rear Focus. This lens is equipped with a system that moves the rear lens group for highspeed, silent focusing. |