Canon Lenses

Est. 1937 · Tokyo, Japan · 143 lenses

Canon's origins trace to 1933, when Goro Yoshida and his brother-in-law Saburo Uchida built the Kwanon — a 35 mm focal-plane shutter camera prototype, named after the Buddhist goddess of mercy — at the Precision Optical Instruments Laboratory in Roppongi, Tokyo. The Kwanon never went into commercial production; the first camera actually sold under the new brand was the Hansa Canon (1936), a coupled-rangefinder 35 mm body distributed by Omiya Shashin-yōhin under the 'Hansa' trade name and fitted with a Nikkor 50 mm f/3.5 lens supplied by Nippon Kogaku — Canon did not yet produce its own lenses. Precision Optical Industry Co., Ltd. was formally incorporated in August 1937 to scale up production, and the company renamed itself Canon Camera Co., Ltd. in 1947 (and Canon Inc. in 1969).

Canon began manufacturing its own optics in 1939 with the Serenar lens series for the Hansa Canon line. Through the 1950s and early 1960s the Canon-mount (Leica thread mount-derivative) rangefinders matured into the Canon VI and Canon 7, and the Canonflex (1959) and FT QL (1966) brought Canon into the SLR market. The R, FL, and FD lens-mount series of the 1960s and early 1970s established Canon's SLR optical line, and the AE-1 (1976) — with CPU-controlled shutter-priority exposure made possible by Canon's early investment in microelectronics — sold an unprecedented five million units worldwide and became the best-selling SLR of the decade. The Canon F-1 (1971) and New F-1 (1981) served professional photojournalists and studio photographers during the same period.

The EOS system (1987) was a deliberate architectural break: Canon abandoned the FD mount mid-product-cycle and introduced the EF mount with a fully electronic lens-body interface and a 54 mm throat at a 44 mm flange focal distance. Every EF lens drives its own autofocus motor internally — Canon's USM (Ultrasonic Motor), introduced on the EF 300 mm f/2.8L USM in 1987, was the first such system in any 35 mm autofocus lens and removed the body-to-lens mechanical coupling that limited earlier AF designs. The EOS-1 (1989) and the long telephoto L-series that followed — together with optical innovations like in-lens Image Stabilization (introduced on the EF 75-300 mm f/4-5.6 IS USM in 1995, the first stabilized 35 mm autofocus lens), Diffractive Optics (DO) elements (EF 400 mm f/4 DO IS USM, 2001), and Blue-spectrum Refractive (BR) elements (EF 35 mm f/1.4L II USM, 2015) — made Canon the dominant force in professional sport and press photography through the 1990s and 2000s.

Canon's transition to digital began with the EOS D30 (2000) and EOS-1D (2001), and the EOS-1Ds (2002) was the first integrated full-frame DSLR. The RF mount system, launched with the EOS R (2018), kept the EF mount's 54 mm throat but shortened the flange focal distance from 44 mm to 20 mm, enabling much shorter back-focus designs and a denser 12-pin lens-body data link. The RF 50 mm f/1.2L USM and RF 85 mm f/1.2L USM demonstrated what this design freedom enabled at wide apertures, while the RF 100 mm f/2.8L Macro IS USM introduced an SA (spherical aberration) control ring — an adjustable element group that allows photographers to dial in or out foreground and background bokeh character at any focus distance.

Notable designs: EF 50mm f/1.0L USM, EF 85mm f/1.2L II USM, EF 200mm f/2L IS USM, RF 50mm f/1.2L USM, RF 100mm f/2.8L Macro IS USM

CANON 10.2-30.6mm f/2-4.9 (Canon PowerShot G9 X)— 8 ELEMENTS / 6 AIR-SPACED COMPONENTS / 3 ZOOM GROUPS, f = 10.50-29.90 mm (PATENT), F/2.06-5.01 (PATENT)CANON 12.5-62.5mm f/2-3.9 (Canon PowerShot G1 X Mark II)— 14 elements / 11 groups, Patent table f = 12.84-60.72 mm, Gaussian paraxial EFL = 12.57-62.20 mmCANON 15-45mm f/2.8-5.6 (Canon PowerShot G1 X Mark III)— 9 elements / 8 groups, 15-45mm f/2.8-5.6, Patent f = 15.45-43.70mmCANON 15.1-60.4mm f/2.8-5.8 (Canon PowerShot G1 X)— 11 elements / 10 groups, Patent f = 15.57-58.93 mm, Marketed 15.1-60.4 mmCANON 35mm f/1.5— 8 ELEMENTS / 4 GROUPS, DESIGN f = 35.05 mm, DESIGN F/1.4CANON 50mm f/0.95— 7 ELEMENTS / 5 GROUPS, DESIGN f = 50.00 mm, DESIGN F/0.95CANON 50mm f/1.2— 7 ELEMENTS / 5 GROUPS, 50 mm (DESIGN 50.513 mm), F/1.2CANON 50mm f/2.8— 4 ELEMENTS / 3 GROUPS, EFL 50.0499 mm, F/2.8CANON 8.8-220mm f/2.8-5.6 (Canon PowerShot G3 X)— 18 ELEMENTS / 13 OPTICAL GROUPS, 6 KINEMATIC ZOOM GROUPS, DESIGN 9.06–213.40mmCANON 8.8-36.8mm f/1.8-2.8 (Canon PowerShot G7 X)— Patent f=9.06-35.69 mm, Marketed 8.8-36.8 mm, f/1.8-2.8CANON CINE-SERVO 17-120mm T2.95-3.9 (CN7×17 KAS S/E1)— 27 ELEMENTS / 22 GROUPS, 17-120mm PRODUCT / 17.0206-118.9429mm DESIGN, F2.8-3.4 DESIGN / T2.95-3.9 PRODUCTCANON EF 100-300mm f/4.5-5.6 USM— 13 ELEMENTS / 10 GROUPS, 100-300mm MARKETED, PATENT EX. 3: 103.35-291.85mmCANON EF 100-300mm f/5.6— 15 ELEMENTS / 9 GROUPS, 100-300mm f/5.6 (MARKETED), PATENT STATES: 69 / 100 / 198 / 290 mmCANON EF 100-400mm f/4.5-5.6 L IS II USM— 21 ELEMENTS / 16 GROUPS, PATENT ZOOM POINTS 102.79-389.03 mm, MODELED EFL 102.758-388.939 mmCANON EF 100-400mm f/4.5-5.6 L IS USM— 17 ELEMENTS / 14 PHYSICAL GROUPS, PATENT f = 102.68 / 161.53 / 389.19 mm, PATENT FNO = 4.6 / 5.1 / 5.8CANON EF 100mm f/2.8 L Macro IS USM— 15 elements / 12 groups, f = 99.996 mm design, F/2.92 design, f/2.8 marketedCANON EF 100mm f/2.8 Macro— 10 ELEMENTS / 9 GROUPS, 100mm f/2.8 (marketed), F/2.89 DESIGNCANON EF 11-24mm f/4 L USM— 16 elements / 11 groups, 11-24 mm f/4 marketed; 11.33-23.28 mm F/4.12 patent design, 4 aspherical elements / 4 aspherical surfacesCANON EF 135mm f/2 L USM— 10 ELEMENTS / 8 GROUPS, 135 mm f/2 (marketing), f = 133.495 mm / F2.0598 (design)CANON EF 135mm f/2.8 Soft Focus— 7 ELEMENTS / 6 GROUPS, 135.043 mm DESIGN EFL, f/3.341 SHARP / f/2.8 SOFTCANON EF 14mm f/2.8 L USM— 14 ELEMENTS / 10 GROUPS, f = 14.201 mm, F/2.8 (DESIGN 1:2.892)CANON EF 15mm f/2.8 Fisheye— 8 ELEMENTS / 7 GROUPS, PATENT F = 15.3 mm, TRACED EFL = 15.2865 mmCANON EF 17-40mm f/4 L USM— 12 ELEMENTS / 9 GROUPS, DESIGN f = 17.49–38.83 mm, DESIGN F/4.1CANON EF 180mm f/3.5 L Macro USM— 14 ELEMENTS / 12 GROUPS, 180mm f/3.5 MARKETED, f = 180.009 mm / f/3.6 DESIGNCANON EF 20-35mm f/2.8 L— 15 elements / 12 groups, 20.6-34.0 mm design zoom, f/2.8CANON EF 200-400mm f/4 L IS USM EXTENDER 1.4×— 24 ELEMENTS / 19 GROUPS (PATENT ACTIVE; REAR FILTER EXCLUDED), 200–400mm f/4 MARKETED, 205.00–389.99 mm / f/4.12 PATENT DESIGNCANON EF 200mm f/1.8 L USM— 10 POWERED ELEMENTS / 8 GROUPS (PATENT CORE), f ≈ 200.017 mm, f/1.86 PATENT DESIGNCANON EF 200mm f/2 L IS USM— 17 elements / 12 groups incl. drop-in filter, f = 194.991 mm design; 200 mm marketed, F/2.05 design; f/2.0 marketedCANON EF 20mm f/2.8 USM— 11 elements / 9 groups, Patent EFL 20.498624 mm; retained at printed scale, f/2.8 marketed; f/2.9 patent designCANON EF 24-70mm f/2.8 L II USM— 18 elements / 13 groups, 24-70 mm f/2.8 marketed; 24.70-67.88 mm F/2.91 patent design, 3 aspherical elements / 4 aspherical surfacesCANON EF 24-70mm f/2.8 L USM— 16 elements / 13 groups, 24.90-68.14 mm patent design, f/2.8 nominal; F2.92 designCANON EF 24mm f/1.4 L II USM— 13 ELEMENTS / 10 GROUPS, f = 24.539 mm (DESIGN), f/1.4 MARKETED; f/1.45 PATENTCANON EF 24mm f/1.4 L USM— 11 ELEMENTS / 9 GROUPS, PATENT f = 24.6 mm, F/1.45, 2ω = 82.7°, 1 UD ELEMENT / 1 GROUND ASPHERICAL ELEMENTCANON EF 28-105mm f/3.5-4.5 II USM— 15 ELEMENTS / 12 GROUPS, PATENT EFL 28.903-101.333 mm, PATENT f/3.63-4.67CANON EF 28-105mm f/4-5.6— 10 ELEMENTS / 9 GROUPS, PATENT 28.91-101.32mm, MARKETED 28-105mm f/4-5.6CANON EF 28-135mm f/3.5-5.6 IS USM— 16 elements / 12 groups, 28-135mm f/3.5-5.6 marketed; 28.891-131.182mm patent design, 135 full-frame / Canon EFCANON EF 28-200mm f/3.5-5.6 USM— 16 GLASS SUBSTRATES / 12 GROUPS, DESIGN 28.92-193.14 mm, MODELED f/3.63-5.88CANON EF 28-70mm f/3.5-4.5 II— 10 ELEMENTS / 9 GROUPS, DESIGN EFL 29.083-67.894 mm, DESIGN f/3.6-4.6CANON EF 28-80mm f/3.5-5.6 II— 10 ELEMENTS / 10 GROUPS, COMPUTED EFL 28.9689-76.9612 mm, PATENT f/3.46-5.88CANON EF 28-90mm f/4-5.6 II USM— 10 elements / 8 air-spaced groups, 28-90mm f/4-5.6, Canon EF / 135 formatCANON EF 28mm f/2.8— 5 ELEMENTS / 5 GROUPS, f = 28.219 mm (MODELED), F/2.8CANON EF 28mm f/2.8 IS USM— 9 ELEMENTS / 7 GROUPS, DESIGN f = 28.60 mm, DESIGN F/2.86CANON EF 300mm f/2.8 L IS USM— 15 ACTIVE ELEMENTS / 11 GROUPS, MODELED EFL ≈ 293.600 mm, MODELED F/2.9CANON EF 35mm f/1.4 L II USM— 14 ELEMENTS / 11 GROUPS, 35.4218 mm DESIGN EFL, F/1.45 MODELEDCANON EF 35mm f/1.4 L USM— 11 ELEMENTS / 9 GROUPS, 35 mm MARKETED / 34.2948 mm DESIGN, f/1.4 MARKETED / f/1.45 DESIGNCANON EF 35mm f/2 IS USM— 10 ELEMENTS / 8 GROUPS, 35mm f/2 (production), f = 34.49 mm / F2.05 (Example 1)CANON EF 400mm f/2.8 L IS II USM— 15 ACTIVE ELEMENTS / 11 GROUPS (PLUS REAR FILTER PLATE G), PATENT f = 392.15 mm; COMPUTED EFL 392.2607 mm, PATENT F/2.90 / MARKETED 400mm f/2.8CANON EF 400mm f/2.8 L IS III USM— 16 active elements / 12 groups (plus rear filter plate G), Patent f = 392.00 mm; traced EFL = 391.938 mm, Design F/2.90; 2ω = 6.32°CANON EF 400mm f/2.8 L IS USM— 400mm f/2.8 (marketed), Patent f = 392.15 mm, F/2.9, 17 elements / 13 groups marketed; 16 / 12 modeled plus drawn rear filterCANON EF 400mm f/4 DO IS USM— US 2002/0015231 A1 — Example 1, 15 powered elements / 11 active groups + rear plate, Design f = 392.025 mm, F/4.12CANON EF 40mm f/2.8 STM— 6 ELEMENTS / 4 GROUPS, f ≈ 39.0 mm, F/2.8CANON EF 500mm f/4 L IS USM— 15 POWERED ELEMENTS / 11 GROUPS + FILTER, PATENT f = 490.56 mm; ARRAY EFL ≈ 491.36 mm, F/4.1 DESIGN / f/4 MARKETEDCANON EF 50mm f/1.0 L USM— 11 ELEMENTS / 9 GROUPS, f ≈ 50.0 mm, F/1.0CANON EF 50mm f/1.2 L USM— 8 ELEMENTS / 6 GROUPS, DESIGN EFL ≈ 51.695 mm, DESIGN F/1.25CANON EF 600mm f/4 L IS II USM— 15 ACTIVE ELEMENTS / 11 GROUPS (PLUS REAR FILTER PLATE G), f = 584.82 mm (MODELED), F/4.12 DESIGNCANON EF 600mm f/4 L IS III USM— 17 ELEMENTS / 13 GROUPS PRODUCTION; 16 / 12 ACTIVE MODEL, 600mm f/4 MARKETED, f ≈ 587.93 mm / F4.12 DESIGNCANON EF 600mm f/4 L IS USM— 15 powered elements / 11 groups + filter, Patent f = 585.20 mm; computed EFL ≈ 585.328 mm, Design F/4.12; marketed f/4CANON EF 70-200mm f/2.8 L IS II USM— 23 elements / 19 groups, Patent f = 72.14-193.97 mm, Patent FNO = 2.9; marketed f/2.8CANON EF 70-200mm f/2.8 L IS USM— PATENT EXAMPLE: 21 ELEMENTS / 19 GROUPS, DESIGN 72.50-194.98 mm, DESIGN f/2.9CANON EF 70-200mm f/4 L IS USM— 20 ELEMENTS / 15 GROUPS, 70-200mm f/4 (MARKETED), 72.11-194.28mm f/4.1 (PATENT TABLE)CANON EF 70-200mm f/4 L USM— 16 ELEMENTS / 13 GROUPS, 70-200mm f/4 (MARKETED), 71.92-194.57mm f/4.1 (PATENT)CANON EF 70-300mm f/4-5.6 IS II USM— 17 ELEMENTS / 12 GROUPS, 70-300mm f/4-5.6 (marketed), 72-290mm f/4.16-5.83 (patent design)CANON EF 70-300mm f/4-5.6 IS USM— 15 elements / 10 groups, Patent design: 72.4-290.0 mm, Production: 70-300mm f/4-5.6CANON EF 70-300mm f/4-5.6 L IS USM— 19 elements / 14 groups, 72.20–290.00 mm design EFL, f/4.20–5.86 design apertureCANON EF 70-300mm f/4.5-5.6 DO IS USM— 17 ELEMENTS / 14 AIR-SPACED ASSEMBLIES, 7 FUNCTIONAL ZOOM GROUPS, DESIGN 72.10-290.07 mmCANON EF 75-300mm f/4-5.6 IS USM— 15 ELEMENTS / 10 GROUPS, DESIGN f = 76.12–291.49 mm, DESIGN F/4.1–5.8CANON EF 8-15mm f/4 L Fisheye USM— 14 elements / 11 groups, 8-15 mm marketed; 8.05-15.14 mm design, f/4 marketed; F/4.12 patent designCANON EF 85mm f/1.8 USM— 9 ELEMENTS / 7 GROUPS, DESIGN f = 85.0 mm, DESIGN F/1.8CANON EF-M 11-22mm f/4-5.6 IS STM— 12 ELEMENTS / 9 GROUPS, 11-22mm f/4-5.6 MARKETED, 11.0037-22.0132mm COMPUTED DESIGNCANON EF-M 15-45mm f/3.5-6.3 IS STM— 10 ELEMENTS / 9 GROUPS, MARKETED 15-45mm f/3.5-6.3, PATENT 15.45-44.45mm f/3.58-6.44CANON EF-M 18-150mm f/3.5-6.3 IS STM— 17 ELEMENTS / 13 GROUPS, DESIGN f = 18.56–145.41 mm, DESIGN F/3.60–6.49CANON EF-M 18-55mm f/3.5-5.6 IS STM— 13 ELEMENTS / 11 GROUPS, 18.58-53.36 mm DESIGN, f/3.60-5.69 MODELEDCANON EF-M 22mm f/2 STM— 7 elements / 6 groups, f = 21.79 mm design / 22 mm marketed, F2.05 design / f/2 marketedCANON EF-M 28mm f/3.5 Macro IS STM— Canon EF-M / APS-C, Patent f = 27.74 mm; recomputed f = 27.76 mm, F/3.61 design; f/3.5 marketedCANON EF-M 32mm f/1.4 STM— 14 elements / 8 groups, f = 32.34 mm design, F/1.45 design; f/1.4 marketedCANON EF-M 55-200mm f/4.5-6.3 IS STM— 17 ELEMENTS / 11 GROUPS, DESIGN f = 56.60–195.00 mm, DESIGN F/4.50–6.45CANON EF-S 10-18mm f/4.5-5.6 IS STM— 14 ELEMENTS / 11 GROUPS, f = 10.30–17.46 mm, F/4.64–5.71CANON EF-S 10-22mm f/3.5-4.5 USM— 13 elements / 10 groups, 10-22mm f/3.5-4.5, APS-C EF-SCANON EF-S 17-55mm f/2.8 IS USM— 21 ELEMENTS (19 GLASS + 2 RESIN) / 12 GROUPS, f = 17.50–53.44 mm, F/2.9 (marketed f/2.8)CANON EF-S 17-85mm f/4-5.6 IS USM— 17 ELEMENTS / 12 GROUPS, 17-85mm MARKETED / 17.55-82.48mm DESIGN, f/4-5.6 MARKETED / f/4.11-5.77 MODELEDCANON EF-S 18-135mm f/3.5-5.6 IS STM— MARKETED 18–135mm f/3.5–5.6, PATENT 18.60–130.48mm f/3.59–5.97, 16 ELEMENTS / 11 PATENT CONSTRUCTION GROUPSCANON EF-S 18-200mm f/3.5-5.6 IS— 16 ELEMENTS / 12 GROUPS, DESIGN f = 18.60–193.23 mm, DESIGN F/3.60–5.88CANON EF-S 18-55mm f/3.5-5.6— 11 ELEMENTS / 9 GROUPS, 18-55mm MARKETED, 18.0006-54.9988mm DESIGNCANON EF-S 18-55mm f/3.5-5.6 IS— 11 elements / 9 groups, Design f = 18.693-53.300 mm, Patent Fno = 3.63-5.86CANON EF-S 24mm f/2.8 STM— 6 ELEMENTS / 5 GROUPS, f ≈ 24.5 mm, F/2.8CANON EF-S 55-250mm f/4-5.6 IS— 12 ELEMENTS / 10 GROUPS, PATENT EFL 56.9-241.3 mm, F/4.16-5.88 PATENT ENDPOINTSCANON EF-S 55-250mm f/4-5.6 IS STM— 15 elements / 12 groups, 55-250mm f/4-5.6 marketed; 56.80-241.32mm patent design, APS-C / Canon EF-SCANON FD 24mm f/2.8 S.S.C.— 24mm f/2.8, 9 elements / 8 groups, 84° diagonal fieldCANON FD 28mm f/2.8 S.C.— 7 elements / 7 groups, 28 mm, F/2.8CANON FD 300mm f/4 S.S.C.— 6 elements / 6 groups, f ≈ 299.5 mm, F/4CANON FD 35mm f/2 S.S.C. (I)— 35mm f/2, 9 elements / 8 groups, Floating focusCANON FD 50mm f/1.2 L— 8 ELEMENTS / 6 GROUPS, f ≈ 50.0 mm, F/1.2CANON FL 300mm f/2.8 S.S.C. FLUORITE— 5 ELEMENTS / 4 GROUPS (PATENT; CANON LISTS 6/5), DESIGN f = 100 (SCALED ×3), DESIGN F/2.8CANON FL 85-300mm f/5— 15 ELEMENTS / 9 GROUPS, DESIGN f = 87.74–292.45 mm, DESIGN F/5CANON NEW FD 100mm f/2— 6 elements / 4 groups, f ≈ 100.00 mm, f/2CANON NEW FD 14mm f/2.8 L— 14 elements / 10 groups, f ≈ 14.0 mm, F/2.8CANON NEW FD 150-600mm f/5.6 L— Telephoto zoom, 150–600 mm f/5.6, 19 elements / 15 groups, All-spherical prescriptionCANON NEW FD 35-105mm f/3.5— 15 ELEMENTS / 13 GROUPS, DESIGN f = 36.2-102 mm, DESIGN F/3.5CANON NEW FD 50mm f/1.2— 7 elements / 6 groups, 46° field of view, MFD 0.5 mCANON R 58mm f/1.2— 7 ELEMENTS / 5 GROUPS, DESIGN f = 1 (SCALED ×58), DESIGN F/1.2CANON RF 10-20mm f/4 L IS STM— 16 ELEMENTS / 12 GROUPS, f ≈ 10.33–19.39 mm, F/4.08–4.12CANON RF 100-500mm f/4.5-7.1 L IS USM— 20 ELEMENTS / 14 GROUPS, 100-500mm f/4.5-7.1 (MARKETED), EXAMPLE 2: 103-490mm f/4.60-7.20CANON RF 100mm f/2.8 L MACRO IS USM— 17 ELEMENTS / 13 GROUPS, f ≈ 100.8 mm, F/2.92CANON RF 135mm f/1.8 L IS USM— 17 ELEMENTS / 12 GROUPS, f ≈ 130.9 mm, F/1.86CANON RF 14-35mm f/4 L IS USM— 16 ELEMENTS / 12 GROUPS, 14–35mm f/4 (marketed), Computed EFL = 14.419–33.959 mmCANON RF 14mm f/1.4 L VCM— 18 ELEMENTS / 13 GROUPS, 14mm f/1.4 (marketed), f = 14.42mm / Fno 1.46 (Example 1)CANON RF 15-30mm f/4.5-6.3 IS STM— 13 ELEMENTS / 11 GROUPS, 15-30mm MARKETING / 15.45-29.15mm PATENT, f/4.5-6.3 MARKETING / f/4.60-6.36 MODELCANON RF 15-35mm f/2.8 L IS USM— 16 elements / 12 groups, 3 aspherical elements (6 surfaces), Patent nd/vd; compatible glass counterpartsCANON RF 16-28mm f/2.8 IS STM— 16 ELEMENTS / 13 GROUPS, f = 15.49–27.16 mm, F/2.9 (CONSTANT, DESIGN)CANON RF 16mm f/2.8 STM— 9 elements / 7 groups, f = 16.49 mm design / 16 mm marketed, F/2.90 design / f/2.8 marketedCANON RF 200-800mm f/6.3-9 IS USM— 17 ELEMENTS / 11 GROUPS, DESIGN 203.00-776.00 mm, F/6.42-9.18 (DESIGN)CANON RF 20mm f/1.4 L VCM— Official: 15 elements / 11 groups; BR layer modeled separately, Patent Example 2: 16 optical members / 11 groups, f = 20.598 mm design, 20 mm marketedCANON RF 24-105mm f/2.8 L IS USM Z— 23 ELEMENTS / 18 GROUPS, f = 24.78–102.06 mm, F/2.9 (constant)CANON RF 24-105mm f/4 L IS USM— 18 ELEMENTS / 14 GROUPS, f = 24.72 – 101.84 mm, F/4.12 (design)CANON RF 24-105mm f/4-7.1 IS STM— 13 ELEMENTS / 11 GROUPS, 24-105mm f/4-7.1 (MARKETED), PATENT f = 24.72-101.85 mmCANON RF 24-240mm f/4-6.3 IS USM— 21 ELEMENTS / 15 GROUPS, f ≈ 24.7–232.8 mm, F/4.12–6.41CANON RF 24-50mm f/4.5-6.3 IS STM— 8 ELEMENTS / 8 GROUPS, f ≈ 24.7–48.5 mm, F/4.63–6.48CANON RF 24-70mm f/2.8 L IS USM— 21 ELEMENTS / 15 GROUPS, f = 24.7–67.9 mm, F/2.91CANON RF 24mm f/1.4 L VCM— 15 ELEMENTS / 11 GROUPS, 24mm f/1.4 (MARKETED), EXAMPLE 3: 24.72mm f/1.46CANON RF 28-70mm f/2 L USM— 19 ELEMENTS / 13 GROUPS, f = 28.9 – 67.9 mm (patent), F/2.06 (constant)CANON RF 28-70mm f/2.8 IS STM— 15 ELEMENTS / 12 GROUPS, f = 28.80–67.90 mm (2.36×), F/2.88–2.92CANON RF 35mm f/1.4 L VCM— 14 ELEMENTS / 11 GROUPS, 35 mm f/1.4 (marketing), f = 34.0 mm, F/1.46 (patent)CANON RF 35mm f/1.8 MACRO IS STM— 11 ELEMENTS / 9 GROUPS, 35 mm f/1.8 MARKETED, 36.00 mm f/1.85 PATENT DESIGNCANON RF 50mm f/1.2 L USM— 15 ELEMENTS / 9 GROUPS, f ≈ 51.1 mm (marketed 50 mm), F/1.25 (marketed F/1.2)CANON RF 50mm f/1.4 L VCM— 14 elements / 11 groups (15 material entries incl. resin cap), f = 48.50 mm patent / 50 mm marketed, F/1.46 design / f/1.4 marketedCANON RF 50mm f/1.8 STM— 6 ELEMENTS / 5 GROUPS, 50mm f/1.8 (MARKETED), f = 49.5616 mm / F1.8527 (MODELED)CANON RF 600mm f/11 IS STM— 10 ELEMENTS / 7 GROUPS, 600mm f/11 (MARKETED), EXAMPLE 1: 581.65mm f/11.31CANON RF 70-200mm f/2.8 L IS USM— 17 ELEMENTS / 12 GROUPS / 7 ZOOM UNITS, f = 72.13–194.06 mm, F/2.89–2.91CANON RF 70-200mm f/4 L IS USM— 16 ELEMENTS / 11 GROUPS, 4 UD-CLASS ELEMENTS, PATENT f = 72.27–193.89 mmCANON RF 800mm f/11 IS STM— 11 ELEMENTS / 8 GROUPS, 800mm f/11 (MARKETED), f = 776.37 mm / F/11.31 (PATENT)CANON RF 85mm f/1.2 L USM— 14 ELEMENTS / 9 GROUPS, f ≈ 86.5 mm, F/1.24CANON RF 85mm f/2 MACRO IS STM— 12 ELEMENTS / 11 GROUPS, f ≈ 82.45 mm, F/2.06CANON RF-S 14-30mm f/4-6.3 IS STM PZ— 10 ELEMENTS / 9 GROUPS, f ≈ 14.41–29.35 mm, F/4.08–6.43CANON RF-S 18-45mm f/4.5-6.3 IS STM— 7 ELEMENTS / 7 GROUPS, 18–45mm f/4.5–6.3 (marketed), 18.53–43.65mm f/4.56–6.50 (patent)CANON SERENAR 100mm f/3.5 I— 100mm, f/3.5, 5 elements / 4 groupsCANON SERENAR 28mm f/3.5— 6 ELEMENTS / 4 GROUPS, f ≈ 28.0 mm, F/3.5CANON SERENAR 35mm f/3.2— 6 ELEMENTS / 4 GROUPS, f ≈ 35.0 mm, F/3.2 (design F/3.0)CANON SERENAR 50mm f/1.8— 6 ELEMENTS / 4 GROUPS, f ≈ 50.0 mm, F/1.8CANON SERENAR 85mm f/1.5— 7 ELEMENTS / 4 GROUPS, f ≈ 85.0 mm, F/1.5CANON TS-E 135mm f/4 L MACRO— 11 elements / 7 groups, f = 132.97 mm design (135 mm marketed), F/4.05 design (f/4 marketed)CANON TS-E 24mm f/3.5 L II— 16 ELEMENTS / 10 GROUPS (PATENT EXAMPLE), 24mm MARKETING / 24.247mm TRACED EFL, f/3.5 MARKETING / F/3.56 DESIGNCANON TS-E 50mm f/2.8 L MACRO— 12 elements / 9 groups, f = 51.40 mm design, F/2.88 design; marketed f/2.8CANON TS-E 90mm f/2.8 L MACRO— 11 elements / 9 groups, Patent f = 55.986 mm; scaled ×1.60754, Computed scaled EFL ≈ 89.96 mm