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Canon EF 24mm f/2.8 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/2.8CanonEF 28mm f/1.8 USM
Overview
ReleasedNovember 1988September 1995
Optics
Lens typePrimePrime
Focal length24 mm28 mm
Maximum aperturef/2.8f/1.8
Minimum aperturef/22f/22
Optical constructionTen elements in ten groups; floating rear focusing system according to Canon Camera MuseumTen elements in nine groups
Special elements–Aspherical lens element
DiaphragmSix blades 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 cameras with full-frame or APS-C sensorsCanon 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 detailArc Form Drive autofocus without full-time manual override according to The Digital Picture; Canon's manual requires the MF switch position for manual focusUSM 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 detailInternal rear focusing; lens length remains constant and the front element does not rotate according to The Digital PicturePhysical 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 diameter58 mm58 mm
Maximum diameter67.5 mm73.6 mm
Length48.5 mm55.6 mm
Weight270 g310 g
ControlsAF/MF switch, focus ring, distance window, depth-of-field scale 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 detail67.5 mm maximum diameter × 48.5 mm length; dimensions and 270 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 hoodEW-60 II reversible hood according to Canon's manual; optional according to The Digital PictureOptional EW-63 II petal hood; reversible for storage according to Canon's manual
Release detailCanon Camera Museum records November 1988 marketing; no first-sale day is givenCanon Camera Museum records September 1995 marketing; no first-sale day is given

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