SSM (Super Sonic wave Motor) - A built-in lens motor for faster automatic focusing with high torque at low speed, quick start/stop response, and quiet, smooth operation.
ED (Extra-low Dispersion) Glass - Three precision ED Glass lenses correct chromatic aberrations to provide extremely sharp telephoto images distant subjects as well as dramatic sports close-ups.
Internal Focusing System - Internal lens elements move, so the overall length does not change creating an auto-focus zoom lens that doesn?t affect the balance of your camera.
2 DMF (Direct Manual Focus) Modes - Allow you to quickly revert to manual focus by just turning the manual focus ring of the lens.
Versatile Focus Hold - Four focus hold buttons in different lens locations, plus electronic slider focus range selector switch.
Lightweight Design - A strong, light magnesium lens barrel makes shooting more comfortable even on long wildlife or sports assignments.
Weights and Measurements