Product comparison · 2 lenses

Canon CN-E20-50mm T2.4 LF/FP vs Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE

10specifications compared
7differ
3identical
21known for one product only

Key differences

The Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE has 1.1 more maximum aperture number than the Canon CN-E20-50mm T2.4 LF/FP (3.5 vs 2.4). The Canon CN-E20-50mm T2.4 LF/FP has 4 more diaphragm blades than the Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE (11 vs 7). The Canon CN-E20-50mm T2.4 LF/FP has 0.2 cm more diameter than the Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE (11.4 cm vs 11.2 cm). Component for: Camcorder on the Canon CN-E20-50mm T2.4 LF/FP, MILC on the Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE. Lens type: Cinema lens on the Canon CN-E20-50mm T2.4 LF/FP, Wide fish-eye lens on the Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE.

Component for
- CN-E20-50mm T2.4 LF/FP:Camcorder
- RF-S 3.9mm F3.5 STM DUAL FISHEYE:MILC
Lens type
- CN-E20-50mm T2.4 LF/FP:Cinema lens
- RF-S 3.9mm F3.5 STM DUAL FISHEYE:Wide fish-eye lens
Lens mount interface
- CN-E20-50mm T2.4 LF/FP:Canon EF
- RF-S 3.9mm F3.5 STM DUAL FISHEYE:Canon RF
Maximum aperture number
- CN-E20-50mm T2.4 LF/FP:2.4
- RF-S 3.9mm F3.5 STM DUAL FISHEYE:3.5
Number of diaphragm blades
- CN-E20-50mm T2.4 LF/FP:11
- RF-S 3.9mm F3.5 STM DUAL FISHEYE:7
Diameter
- CN-E20-50mm T2.4 LF/FP:11.4 cm
- RF-S 3.9mm F3.5 STM DUAL FISHEYE:11.2 cm
Weight
- CN-E20-50mm T2.4 LF/FP:3.3 kg
- RF-S 3.9mm F3.5 STM DUAL FISHEYE:290 g

Side by side

Differences highlightedShow differences only

Comparison of CN-E20-50mm T2.4 LF/FP, RF-S 3.9mm F3.5 STM DUAL FISHEYE
31 specifications	A Canon CN-E20-50mm T2.4 LF/FP View product	B Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE View product
Lens system5 differ
Component forDiffers	Camcorder	MILC
Lens structure (elements/groups)Known for one	Unknown — not stated by the source	11/8
Lens typeDiffers	Cinema lens	Wide fish-eye lens
Lens viewing angle, horizontalKnown for one	Unknown — not stated by the source	144°
Lens viewing angle, verticalKnown for one	Unknown — not stated by the source	144°
Lens viewing angle, diagonalKnown for one	Unknown — not stated by the source	144°
Closest focusing distanceKnown for one	Unknown — not stated by the source	0.2 m
Control ringKnown for one	Unknown — not stated by the source	Yes
Image sensor formatKnown for one	Unknown — not stated by the source	APS-C
Lens mount interfaceDiffers	Canon EF	Canon RF
Maximum aperture numberDiffers	2.4	3.5
Minimum aperture numberKnown for one	Unknown — not stated by the source	16
Number of diaphragm bladesDiffers	11	7
Focal length rangeKnown for one	20 - 50 mm	Unknown — not stated by the source
Performanceidentical
AF actuatorKnown for one	Unknown — not stated by the source	STM
Camera brands compatibility	Canon	Canon
CompatibilityKnown for one	Unknown — not stated by the source	EOS R7
Lens coating featuresKnown for one	Unknown — not stated by the source	Air Sphere Coating (ASC)
Maximum magnificationKnown for one	Unknown — not stated by the source	0.03x
Number of Ultra-low Dispersion (UD) elementsKnown for one	Unknown — not stated by the source	2
Designidentical
Product colour	Black	Black
DustproofKnown for one	Unknown — not stated by the source	No
Moisture-resistantKnown for one	Unknown — not stated by the source	No
Weight & dimensions2 differ
DiameterDiffers	11.4 cm	11.2 cm
Filter sizeKnown for one	Unknown — not stated by the source	30.5 mm
LengthKnown for one	Unknown — not stated by the source	54.6 mm
Extended lengthKnown for one	Unknown — not stated by the source	8.37 cm
WeightDiffers	3.3 kg	290 g
Packaging contentidentical
Lens cap included	Yes	Yes
Rear lens cap includedKnown for one	Unknown — not stated by the source	Yes
Technical detailsidentical
Aspect ratioKnown for one	1.5:1, 1.78:1, 1.9:1	Unknown — not stated by the source

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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