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Canon EF 24mm f/1.4L USM vs Canon EF 28mm f/1.8 USM

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

Better figure, where one is clearly better

CanonEF 24mm f/1.4L USMCanonEF 28mm f/1.8 USM
Overview
ReleasedDecember 1997September 1995
Optics
Lens typePrimePrime
Focal length24 mm28 mm
Maximum aperturef/1.4f/1.8
Minimum aperturef/22f/22
Optical constructionEleven elements in nine groups; floating optical systemTen elements in nine groups
Special elementsGround and polished aspherical glass element and UD element according to Canon Camera MuseumAspherical lens element
DiaphragmSeven-blade circular aperture according to Canon Camera MuseumSeven blades
Angle of view84° diagonal, 74° horizontal and 53° vertical according to Canon's manual75° diagonal, 65° horizontal and 46° vertical
Mount and compatibility
MountsCanon EFCanon EF
Image circleFull frameFull frame
CompatibilityCanon EF full-frame and APS-C camerasCanon EF cameras with full-frame or APS-C sensors
Adaptor support–EF12 II extension tube gives 0.61–0.43× magnification; EF25 II gives 1.13–0.96×
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.25 m0.25 m
Maximum magnification0.16×0.18×
Optical stabilisationNo–
Autofocus detailRing USM with full-time manual focus; Canon's manual specifies One-Shot AF with the shutter button held halfway for manual adjustment after autofocusUSM autofocus with mechanical full-time manual focusing. Canon's manual specifies turning the ring with the shutter half-pressed after One Shot AF
Focus distance detailRear focusing system with non-rotating filter frame according to Canon Camera MuseumPhysical length remains constant and the front element does not rotate according to Photozone
Stabilisation detailNo optical stabilisation according to The Digital Picture's exact-model specification table–
Design
Dust and moisture resistantNo–
Filter diameter77 mm58 mm
Maximum diameter83.5 mm73.6 mm
Length77.4 mm55.6 mm
Weight550 g310 g
ControlsAF/MF switch, focus ring, distance window and infrared focus indexAF/MF switch, focus ring, distance window, depth-of-field scale and infrared focus index
Weather resistanceNo weather sealing according to The Digital Picture's exact-model specification table–
Dimensions detail83.5 mm maximum diameter × 77.4 mm length; dimensions and 550 g weight are lens-only. Front and rear caps add 21.5 mm according to Canon's manualMaximum diameter × length in retracted state; dimensions and 310 g weight are lens-only. Front and rear caps add 21.5 mm according to Canon's manual
Lens hoodSupplied reversible EW-83D II petal hood; LP1214 case according to Canon's manual and The Digital PictureOptional EW-63 II petal hood; reversible for storage according to Canon's manual
Release detailCanon Camera Museum records December 1997 marketing; no first-sale day is givenCanon Camera Museum records September 1995 marketing; no first-sale day is given

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