USM (ultrasonic or micro-motor), Minolta/Konica Minolta/Sony SSM (ultrasonic motor) or Sony SAM (micro-motor), etc. A — "Art Series", large aperture prime and zoom lenses, high optical performance. USB dock compatible. Part of 2013 lens lineup restructuring. C — "Contemporary Series", combining optical performance with compactness. USB dock compatible. Part of 2013 lens lineup restructuring. S — "Sports Series", telephoto and super-telephoto lenses. USB dock compatible. Part of 2013 lens lineup restructuring. EX — "Excellence", EX-finish, high performance series. DG — "Digital Grade", coatings optimized for DSLRs, full-frame as well as APS-C, also usable on 35mm film SLRs DC — "Digital Compact", lenses for DSLRs featuring APS-C size sensors, only DL — "Deluxe", indicates lower-end film era lenses DN — "Digital Neo", lenses for mirrorless interchangeable-lens cameras. DF — "Dual Focus", lens features clutch to disengage focus ring when in AF mode FLD — "'F' Low Dispersion" glass, the highest level low dispersion glass available with extremely high light transmission. This glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass HF — "Helical Focusing", front element of lens does not rotate (useful for polarizing filters and petal lens hoods) RF — "Rear Focusing", lenses employing rear-focusing, no length changes during focussing, no rotating front elements IF — "Inner Focusing", length of lens does not change during focusing, no rotating front elements UC — "Ultra-Compact" Zoom lenses Wide-angle zooms Standard zooms Telephoto zooms Prime lenses Wide-angle primes Standard primes Macro primes Telephoto primes DC lenses for APS-C 4.5mm 2.8 EX DC Circular Fisheye HSM 8–16mm 4.5-5.6 DC HSM 10mm 2.8 EX DC Fisheye HSM 30mm 1.4 EX DC HSM 10–20mm f/3.5 EX DC HSM 10–20mm 4–5.6 EX DC HSM 17–50mm 2.8 EX DC OS HSM 17–70mm 2.8–4.5 DC MACRO HSM 17–70mm 2.8-4.0 DC OS MACRO HSM 17–70mm 2.8-4.0 DC OS MACRO HSM 'C' 18–35mm 1.8 DC HSM A 18–50mm 2.8 EX DC 18–50mm 2.8 EX DC MACRO 18–50mm 2.8-4.5 DC OS HSM 18–50mm 3.5–5.6 DC 18–125mm 3.5–5.6 DC 18–125mm 3.8–5.6 DC OS HSM 18–200mm 3.5–6.3 DC 18–200mm 3.5–6.3 DC OS (HSM Version for Nikon only) 18–200mm 3.5-6.3 DC OS HSM II 18–200mm 3.5-6.3 DC Macro OS HSM C 18–250mm 3.5–6.3 DC OS HSM 50-100mm 1.8 DC HSM 50–150mm 2.8 EX DC HSM 50–150mm 2.8 EX DC HSM II 50–150mm 2.8 EX DC OS HSM 55–200mm 4–5.6 DC DN lenses