LENS SUFFIX GUIDE used by manufacturers

·         AD          Tamron Anomalous Dispersion element

·         AF-DC   Nikon defocus feature

·         AF-S       Nikon lenses with Silent Wave Motor

·         APO       Sigma Apochromatic lenses

·         ASL         Tamron lenses featuring aspherical elements

·         ASP        Sigma lenses featuring aspherical elements

·         AT-X      Tokina’s Advanced Technology Extra Pro range of lenses

·         CONV    Sigma lenses compatible with teleconvertors

·         CRC        Nikon Close Range Correction system

·         D             Nikon lenses that communicate distance information

·         DA          Pentax lenses optimized for APS-C sensors

·         DC          Sigma’s designation for digital lenses

·         DF           Sigma lenses with dual focus facility

·         DG          Sigma’s designation for digital and full-frame lenses

·         Di            Tamron lenses designed for full-frame sensors

·         Di-II       Tamron lenses designed for APS-C sized sensors

·         DO          Canon lenses with a diffractive optical element

·         DT           Sony lenses optimized for APS-C sized sensors

·         DX          Nikon’s designation for digital lenses

·         ED           Nikon’s lenses featuring Extra low

·         ED           Dispersion elements and Olympus and Leica (Panasonic) lense with low dispersion                 element

·         EF           Canon’s designation for full-frame lenses

·         EF-S       Canon’s lenses designed for APS-C sized sensors

·         EX           Sigma’s ‘Excellent’ range

·         FC           Tokina’s Focus Clutch Mechanism

·         FE           Tokina lenses featuring a floating element

·         FE           Canon’s fisheye lenses

·         G             Nikon lenses without a manual aperture ring

·         HF          Sigma’s designation for Helical Focusing

·         HID        Tamron’s High Index Dispersion glass

·         HLD        Tokina’s High refractive/low dispersion glass

·         HSM      Sigma’s lenses with a Hypersonic Motor

·         IF            Sigma/Tamron/Nikon/Tokina Internal Motor

·         IRF          Tokina’s Internal Rear Focusing Lenses

·         IS            Canon’s Image Stabilised lenses

·         L              Canon’s ‘Luxury’ range of lenses

·         LD           Tamron lenses featuring Low Dispersion Glass

·         M-OIS   Panasonic’s Mega Optical Image Stabilisation

·         N             Nikon’s Nano Crystal Coating

·         OS          Sigma’s Optically Stabilised lenses

·         PRO       Tokina’s Professional range of lenses

·         RF           Sigma and Nikon lenses with Rear Focusing

·         SD           Tokina’s Super Low Dispersion element

·         SDM      Pentax’s Sonic Direct Drive Motor

·         SF           Canon lenses with Softfocus feature

·         SHM      Tamron’s Super Hybird Mount