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Canon EF 100-400mm f4.5-5.6L IS USM Review

Main Features

  • 100-400mm Focal Range
  • F4.5 - F5.6 Max Aperture
  • Image Stabilization
  • Weather Sealed
  • Filter Thread: 77mm
  • Max Format: 35mm FF
  • Canon EF Mount
  • Weight: 1380g.
  • Diameter: 92mm
  • Length: 189mm
  • Min Focus Distance:1.8m
  • Max Magnification:0.2x

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Canon 100-400mm f4.5-5.6L IS USM Overview
Canon 100-400mm f4.5-5.6L IS USM is an Auto Focus (AF) Telephoto Zoom lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 100 - 400mm. With the max apertures of only f4.5 at 100mm, and f5.6 at 400mm, the lens is quite slow at both ends.
This lens features on optical image stabilization which helps capturing sharper images at lower shutter speeds. Canon 100-400mm f4.5-5.6L IS USM is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body.

Canon 100-400mm f4.5-5.6L IS USM was replaced with Canon EF 100-400mm f4.5-5.6L IS II USM. Follow the link to read our comparison of these cameras:
Compare Canon EF 100-400mm f4.5-5.6L IS USM vs Canon EF 100-400mm f4.5-5.6L IS II USM
Pros and Cons of Canon EF 100-400mm f4.5-5.6L IS USM

PROs
Image Stabilization
Weather Sealed
Built-in Autofocus
Full-time Manual Focusing
Zoom Lock
Covers Full-Frame Sensor

CONs
Lens Extents while focusing
Slow Aperture at Wide end
Slow Aperture at Tele end
Variable Aperture
Heavy
Pricey
Canon 100-400mm f4.5-5.6L IS USM Detailed Specifications

General
Brand Canon
Lens Type Zoom
Lens Type Telephoto Zoom
Lens Mount Canon EF
Max_Format 35mm FF
Focal Range 100-400mm
Image Stabilization Yes
Colour Grey and Black
Zoom Method Push/Pull (extending)
Power Zoom No
Zoom Lock Yes
Zoom Ratio 4.0X
APERTURE
Max Aperture F4.5 - F5.6
Min Aperture F32.0 - F38.0
Aperture Ring No
Diaphragm Blades 5
Optics
Optical Elements 17
Optical Groups 14
Special Elements fluorite and Super UD-glass elements largely eliminate secondary spectrum

FOCUSING
Min Focus Distance 1.8m
Max Magnification 0.2X
Autofocus Yes
AF Motor Type Ultrasonic
Full Time Manual Yes
Focus Method Rear
Distance Scale Yes
DoF Scale Yes
PHYSICAL SPECS
Weight 1380g
Diameter 92mm
Length 189mm
Materials Metal barrel, metal mount
Weather Sealing Yes
Filter Thread 77mm
Filter Notes -
Hood Code ET-83C
Tripod Collar No
Canon EF 100-400mm f4.5-5.6L IS USM Alternatives in Canon EF Mount
Model Focal Length Max Aperture Weight Focusing
Canon EF 100-400mm f4.5-5.6L IS II USM 100-400mm F4.5 - F5.6 1590gr AF
Compare with Canon EF 100-400mm f4.5-5.6L IS USM
Tokina AT-X 80-400mm f4.5-5.6 80-400mm F4.5 - F5.6 1020gr AF
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Sigma 100-400mm F5-6.3 DG OS HSM 100-400mm F5-6.3 1160gr AF
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Sigma 120-400mm F4.5-5.6 DG OS HSM 120-400mm F4.5 - F5.6 1640gr AF
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Tamron 100-400mm F4.5-6.3 Di VC USD 100-400mm F4.5-6.3 1135gr AF
Compare with Canon EF 100-400mm f4.5-5.6L IS USM
Other Frequently Asked Questions about Canon EF 100-400mm f4.5-5.6L IS USM
is the Canon EF 100-400mm f4.5-5.6L IS USM a Weather Sealed lens?
What is the Minimum Focusing Distance of Canon EF 100-400mm f4.5-5.6L IS USM
is the Canon EF 100-400mm f4.5-5.6L IS USM an Autofocus (AF) lens?
What is the Filter Thread Size of Canon EF 100-400mm f4.5-5.6L IS USM
What is the Maximum Magnification Ratio of Canon EF 100-400mm f4.5-5.6L IS USM
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