| AF-S | Aufo Focus Silent - An autofocus lens with a Silent wave, integrated, coreless focus motor (1996). Basically an update to AF-I. Some older bodies can't autofocus with them (N60, N8008) |
| ED | Extra Low Dispersion Glass. Enable the production of lenses that offer superior sharpness and color correction by minimizing chromatic aberration. |
| IF | Internal Focusing |
| D | Distance Information. Adds distance information to the data transmitted to the camera via chip. Distinguished by the D or G after the lens designation |
| M/A | M/A mode. AF-S Nikkors feature Nikon’s exclusive M/A mode, that allows switching from autofocus to manual operation with virtually no time lag — even during AF servo operation and regardless of AF mode in use. |
| SIC | Super Integrated Coating, a multi-layer flare reduction coating, usually applied to the more complex zoom lenses. |
| SWM | Silent Wave Motor. AF-S Nikkors feature Nikon’s SWM which converts “traveling waves” into rotational energy to focus the optics. This enables high-speed autofocusing that’s extremely accurate and super quiet. |