Product comparison · 2 lenses

Canon RF 50mm f/1.8 STM vs Canon RF400mm F2.8 L IS USM

17specifications compared
14differ
3identical
11known for one product only

Key differences

The Canon RF400mm F2.8 L IS USM has 350 mm more fixed focal length than the Canon RF 50mm f/1.8 STM (400 mm vs 50 mm). The Canon RF400mm F2.8 L IS USM has 2.2 m more closest focusing distance than the Canon RF 50mm f/1.8 STM (2.5 m vs 0.3 m). The Canon RF400mm F2.8 L IS USM has 1 more maximum aperture number than the Canon RF 50mm f/1.8 STM (2.8 vs 1.8). Lens structure (elements/groups): 6/5 on the Canon RF 50mm f/1.8 STM, 17/13 on the Canon RF400mm F2.8 L IS USM. Product colour: Black on the Canon RF 50mm f/1.8 STM, Black, White on the Canon RF400mm F2.8 L IS USM.

Lens structure (elements/groups)
- RF 50mm f/1.8 STM:6/5
- RF400mm F2.8 L IS USM:17/13
Fixed focal length
- RF 50mm f/1.8 STM:50 mm
- RF400mm F2.8 L IS USM:400 mm
Closest focusing distance
- RF 50mm f/1.8 STM:0.3 m
- RF400mm F2.8 L IS USM:2.5 m
Maximum aperture number
- RF 50mm f/1.8 STM:1.8
- RF400mm F2.8 L IS USM:2.8
Minimum aperture number
- RF 50mm f/1.8 STM:22
- RF400mm F2.8 L IS USM:32
Number of diaphragm blades
- RF 50mm f/1.8 STM:7
- RF400mm F2.8 L IS USM:9
Image stabilizer number of stops
- RF 50mm f/1.8 STM:7
- RF400mm F2.8 L IS USM:5.5
Maximum magnification
- RF 50mm f/1.8 STM:0.25x
- RF400mm F2.8 L IS USM:0.17x

Side by side

Differences highlightedShow differences only

Comparison of RF 50mm f/1.8 STM, RF400mm F2.8 L IS USM
28 specifications	A Canon RF 50mm f/1.8 STM View product	B Canon RF400mm F2.8 L IS USM View product
Lens system7 differ
Component for	SLR	SLR
Lens structure (elements/groups)Differs	6/5	17/13
Lens typeKnown for one	Unknown — not stated by the source	Super telephoto lens
Lens viewing angle, horizontalKnown for one	Unknown — not stated by the source	5.3°
Aperture range (F-F)Known for one	Unknown — not stated by the source	2.8 - 32
Lens viewing angle, verticalKnown for one	Unknown — not stated by the source	3.3°
Fixed focal lengthDiffers	50 mm	400 mm
Closest focusing distanceDiffers	0.3 m	2.5 m
Maximum aperture numberDiffers	1.8	2.8
Minimum aperture numberDiffers	22	32
Number of diaphragm bladesDiffers	7	9
Zoom capabilityKnown for one	Unknown — not stated by the source	Yes
Image stabilizer	Yes	Yes
Image stabilizer number of stopsDiffers	7	5.5
Lens mount interfaceKnown for one	Canon RF	Unknown — not stated by the source
Number of aspheric elementsKnown for one	1	Unknown — not stated by the source
Performance1 differ
Auto focusKnown for one	Unknown — not stated by the source	Yes
Camera brands compatibility	Canon	Canon
Lens coating featuresKnown for one	Unknown — not stated by the source	Air Sphere Coating (ASC), Super Spectra Coating (SSC)
Maximum magnificationDiffers	0.25x	0.17x
Ultrasonic motor (USM)Known for one	Unknown — not stated by the source	Yes
Design1 differ
Product colourDiffers	Black	Black, White
Technical details1 differ
Viewing angleDiffers	46°	6.1°
Weight & dimensions4 differ
DiameterDiffers	6.92 cm	16.3 cm
Filter sizeDiffers	43 mm	52 mm
LengthDiffers	40.5 mm	367 mm
WeightDiffers	160 g	2.89 kg
Packaging contentidentical
Lens cap includedKnown for one	Unknown — not stated by the source	Yes

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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