Product comparison · 2 lenses

Canon EF 20mm f/2.8 USM vs Canon EF 75-300mm f/4.0-5.6 III USM

14specifications compared
11differ
3identical
5known for one product only

Key differences

The Canon EF 75-300mm f/4.0-5.6 III USM has 2 /9 more lens structure (elements/groups) than the Canon EF 20mm f/2.8 USM (13/9 vs 11/9). The Canon EF 75-300mm f/4.0-5.6 III USM has 1.25 m more closest focusing distance than the Canon EF 20mm f/2.8 USM (1.5 m vs 0.25 m). The Canon EF 75-300mm f/4.0-5.6 III USM has 2 more diaphragm blades than the Canon EF 20mm f/2.8 USM (7 vs 5). Lens type: Ultra-wide lens on the Canon EF 20mm f/2.8 USM, Telephoto lens on the Canon EF 75-300mm f/4.0-5.6 III USM. Lens viewing angle, diagonal: 94° on the Canon EF 20mm f/2.8 USM, 32.17 - 8.25° on the Canon EF 75-300mm f/4.0-5.6 III USM.

Lens structure (elements/groups)
- EF 20mm f/2.8 USM:11/9
- EF 75-300mm f/4.0-5.6 III USM:13/9
Lens type
- EF 20mm f/2.8 USM:Ultra-wide lens
- EF 75-300mm f/4.0-5.6 III USM:Telephoto lens
Lens viewing angle, diagonal
- EF 20mm f/2.8 USM:94°
- EF 75-300mm f/4.0-5.6 III USM:32.17 - 8.25°
Closest focusing distance
- EF 20mm f/2.8 USM:0.25 m
- EF 75-300mm f/4.0-5.6 III USM:1.5 m
Number of diaphragm blades
- EF 20mm f/2.8 USM:5
- EF 75-300mm f/4.0-5.6 III USM:7
AF actuator
- EF 20mm f/2.8 USM:USM
- EF 75-300mm f/4.0-5.6 III USM:Micro USM
Diameter
- EF 20mm f/2.8 USM:7.75 cm
- EF 75-300mm f/4.0-5.6 III USM:7.1 cm
Filter size
- EF 20mm f/2.8 USM:72 mm
- EF 75-300mm f/4.0-5.6 III USM:58 mm

Side by side

Differences highlightedShow differences only

Comparison of EF 20mm f/2.8 USM, EF 75-300mm f/4.0-5.6 III USM
19 specifications	A Canon EF 20mm f/2.8 USM View product	B Canon EF 75-300mm f/4.0-5.6 III USM View product
Lens system5 differ
Component for	SLR	SLR
Lens structure (elements/groups)Differs	11/9	13/9
Lens typeDiffers	Ultra-wide lens	Telephoto lens
Lens viewing angle, horizontalKnown for one	84°	Unknown — not stated by the source
Lens viewing angle, verticalKnown for one	62°	Unknown — not stated by the source
Fixed focal lengthKnown for one	20 mm	Unknown — not stated by the source
Lens viewing angle, diagonalDiffers	94°	32.17 - 8.25°
Closest focusing distanceDiffers	0.25 m	1.5 m
Lens mount interface	Canon EF	Canon EF
Maximum aperture numberKnown for one	22	Unknown — not stated by the source
Number of diaphragm bladesDiffers	5	7
Focal length rangeKnown for one	Unknown — not stated by the source	75 - 300 mm
Performance1 differ
AF actuatorDiffers	USM	Micro USM
Designidentical
Product colour	Black	Black
Weight & dimensions4 differ
DiameterDiffers	7.75 cm	7.1 cm
Filter sizeDiffers	72 mm	58 mm
LengthDiffers	70.6 mm	122 mm
WeightDiffers	405 g	480 g
Other features1 differ
MagnificationDiffers	0.14x	0.25x

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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