AD: Abnormal dispersion = Special lens lens element to compensate for the dispersion of other lenses
AF: Lenses with autofocus
Asph: aspherical lens = for optimized error correction
HID: high index high dispersion - HID glass element to minimize chromatic aberration
Di: image field up to 24 x 36 mm format
Di II: only for models with APS format sensor
D III: Lenses for mirrorless system cameras
IF: Internal Focusing
LD: Low Dispersion = with lens element of special glass with very low color dispersion
PZD: PiezoDrive = Piezoelectric drive motor based on standing wave
SP: SuperPerformance = particularly complex optical design
USD: Ultrasonic Silent Drive = piezoelectric autofocus motor, based on a progressive wave
VC: Vibration Compensation = optical image stabilizer
XLD: Extra Low Dispersion = lens element made of special glass with very low color dispersion
XR: Extra Refractive = Special glass with very high refractive power
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