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Canon RF 100-400mm F5.6-8 IS USM

Photo: GodeNehler (CC BY-SA 4.0)

RF 100-400mm F5.6-8 IS USM

  • 100-400mm
  • f/5.6
  • Telephoto Zoom
  • Stabilized
  • 635 g
  • Min focus 0.88 m
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Quick answer

A telephoto zoom for Canon RF full-frame cameras with image stabilization and a light build for its range.

Pros

  • Light (635 g)
  • Image stabilization
  • Long range
  • Compact

Cons

  • Slow aperture
  • Not an L-series build
  • Less sharp than L lenses

Verdict

A light RF telephoto. Dim light is its main limitation.

About this lens

Canon RF 100-400mm F5.6-8 IS USM: a telephoto zoom lens with a 100-400mm focal length and a maximum aperture of f/5.6-8, made for Canon RF mount cameras, with Image Stabilizer and ultrasonic-motor autofocus. The range suits sports, wildlife, events and portraits.

Canon RF 100-400mm F5.6-8 IS USM specifications

Brand
Canon
Mount
Canon RF
Focal length
100-400mm
Maximum aperture
f/5.6
Minimum aperture
f/8
Lens type
Telephoto Zoom
Format coverage
full-frame
Released
2021
Optical construction
12 elements in 9 groups
Aperture blades
9
Image stabilization
Yes
Autofocus motor
USM
Minimum focus distance
0.88 m
Maximum magnification
0.41x
Filter thread
67 mm
Weight
635 g
Length
164.7 mm
Diameter
79.5 mm

Specification source: global.canon

What can you shoot with the Canon RF 100-400mm F5.6-8 IS USM?

  • Wildlife
  • Sports
  • Travel

Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

Full-frame equivalent and field of view

Calculated from the focal length and crop factor. Not measured.

Sensor Crop Equivalent Horizontal FOV Diagonal FOV
Full frame 1.0x 100–400mm 5.2–20.4° 6.2–24.4°
APS-C 1.6x 160–640mm 3.2–12.8° 3.9–15.4°

Try the field-of-view calculator

Frequently asked questions

Is the Canon RF 100-400mm F5.6-8 full-frame?

Yes. It is made for full-frame RF cameras, and works on APS-C bodies as a 160-640mm lens.

Does the RF 100-400mm have image stabilization?

Yes, it has optical IS that works with in-body stabilization on supported cameras.

RF 100-400mm vs RF 100-500mm: which should I buy?

The 100-500 is brighter, L-series built, and reaches farther. The 100-400 is lighter.

Alternatives for Canon RF from other brands

All Canon RF lenses

Same mount, overlapping focal range, closest maximum aperture first.

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Cameras that fit the Canon RF mount

All Canon RF cameras (14)