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Canon EF 24–105mm f/4L IS II USM vs Canon EF 85mm f/1.8 USM

Every spec side by side, from each maker's published figures.

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CanonEF 24–105mm f/4L IS II USMCanonEF 85mm f/1.8 USM
Overview
Released2016July 1992
Optics
Lens typeZoomPrime
Focal length24–105 mm85 mm
Maximum aperturef/4f/1.8
Minimum aperturef/22f/22
Optical constructionSeventeen elements in twelve groupsNine elements in seven groups
Special elementsFour aspherical elements–
CoatingsAir Sphere Coating; front and rear fluorine coating according to The Digital PictureSuper Spectra coatings according to Canon UK
DiaphragmTen blades with a circular apertureEight blades according to Canon
Angle of view84°–23°20′ diagonal, 74°–19°20′ horizontal and 53°–13° vertical–
Mount and compatibility
MountsCanon EFCanon EF
Image circleFull frameFull frame
CompatibilityCanon EF full-frame and APS-C DSLRs; EOS M cameras require an EF-EOS M mount adaptorCanon EF cameras with full-frame or APS-C sensors
Teleconverter supportCanon's manual excludes extenders–
Adaptor supportEF12 II gives 0.60–0.50× at 24 mm and 0.41–0.12× at 105 mm; EF25 II is incompatible at 24 mm and gives 0.61–0.27× at 105 mmCanon UK confirms EOS M compatibility using the EF-EOS M adapter
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.45 m0.85 m
Maximum magnification0.24×0.13×
Optical stabilisationYesNo
Autofocus detailUSM autofocus with full-time manual focusing. Canon's manual specifies turning the ring with the shutter half-pressed after One Shot AFUSM autofocus with full-time manual override according to Canon UK; Photozone identifies ring-type USM and rear focusing
Focus distance detailInternal focusing according to The Digital Picture; Canon instructs users to finish zooming before focusingLens length stays constant during focusing according to Photozone; front lens group does not rotate according to Canon Camera Museum
Stabilisation detailCanon claims four-stop optical stabilisation. The exact manual describes automatic adjustment for still subjects and panning, with correction perpendicular to the panning directionNo optical stabilisation according to ePHOTOzine's exact-model specification
Design
Dust and moisture resistantYes–
Filter diameter77 mm58 mm
Maximum diameter83.5 mm75 mm
Length118 mm71.5 mm
Weight795 g425 g
ControlsAF/MF and stabilisation switches, separate focus and zoom rings, distance window, infrared index and transport lock at 24 mmAF/MF switch, focus ring, distance window and depth-of-field markings
Zoom designExtending barrel; zoom lock holds the shortest 24 mm position–
Weather resistanceCanon UK describes dust and moisture sealing; the manual identifies a rubber mount ring. The Digital Picture recommends a protective filter to complete front sealing–
Dimensions detailMaximum diameter × retracted length; size and 795 g weight are lens-only. Caps add 24.2 mm to length according to Canon's manual75 mm maximum diameter × 71.5 mm length; 425 g according to Canon Camera Museum
Lens hoodEW-83M hood with release button; reversible for storageHood is sold separately according to Photozone and ePHOTOzine
In the boxLens, E-77 II front cap, Dust Lens Cap E, EW-83M hood, LP1219 case and manual according to Canon UKLens, E-58II front cap, Lens Dust Cap E and user manual according to Canon UK
Release detailCanon Camera Museum's exact-model table records October 2016 marketing; its later RF 24–105mm page retrospectively says November 2016. The year is used because the maker gives conflicting months without explaining a regional differenceCanon Camera Museum records July 1992 marketing; a first-sale day is not given

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