Product comparison · 2 lenses

Canon EF-S 17-55 f/2.8 IS USM vs Samsung 20mm F2.8 i-Function

Key differences

Lens structure (elements/groups)
- EF-S 17-55 f/2.8 IS USM:19/12
- 20mm F2.8 i-Function:6/4
Lens viewing angle, diagonal
- EF-S 17-55 f/2.8 IS USM:78°
- 20mm F2.8 i-Function:70.2°
Compatibility
- EF-S 17-55 f/2.8 IS USM:Canon DSLR
- 20mm F2.8 i-Function:Samsung NX
Diameter
- EF-S 17-55 f/2.8 IS USM:8.35 cm
- 20mm F2.8 i-Function:6.22 cm
Filter size
- EF-S 17-55 f/2.8 IS USM:77 mm
- 20mm F2.8 i-Function:43 mm
Length
- EF-S 17-55 f/2.8 IS USM:110.6 mm
- 20mm F2.8 i-Function:24.5 mm
Weight
- EF-S 17-55 f/2.8 IS USM:645 g
- 20mm F2.8 i-Function:73 g

Differences highlightedShow differences only

Comparison of EF-S 17-55 f/2.8 IS USM, 20mm F2.8 i-Function
22 specifications	A Canon EF-S 17-55 f/2.8 IS USM View product	B Samsung 20mm F2.8 i-Function View product
Lens system2 differ
Component forKnown for one	Unknown — not stated by the source	MILC
Lens structure (elements/groups)Differs	19/12	6/4
Lens typeKnown for one	Unknown — not stated by the source	Wide lens
Fixed focal lengthKnown for one	Unknown — not stated by the source	20 mm
Lens viewing angle, diagonalDiffers	78°	70.2°
Closest focusing distanceKnown for one	Unknown — not stated by the source	0.17 m
Lens mount interfaceKnown for one	Unknown — not stated by the source	Samsung NX
Maximum aperture numberKnown for one	Unknown — not stated by the source	22
Minimum aperture number	2.8	2.8
Number of diaphragm bladesKnown for one	Unknown — not stated by the source	7
Focus adjustmentKnown for one	Auto/Manual	Unknown — not stated by the source
Focal length rangeKnown for one	17 - 55 mm	Unknown — not stated by the source
Image stabilizerKnown for one	Yes	Unknown — not stated by the source
Performance1 differ
Auto focus	Yes	Yes
CompatibilityDiffers	Canon DSLR	Samsung NX
Maximum magnificationKnown for one	Unknown — not stated by the source	0.18x
Manual focusKnown for one	Yes	Unknown — not stated by the source
Designidentical
Product colour	Black	Black
Weight & dimensions4 differ
DiameterDiffers	8.35 cm	6.22 cm
Filter sizeDiffers	77 mm	43 mm
LengthDiffers	110.6 mm	24.5 mm
WeightDiffers	645 g	73 g

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.