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Canon EF 300mm f4.0L IS USM Review

Canon EF 300mm f4.0L IS USM

Main Features

  • 300mm Focal Range
  • F4.0 Max Aperture
  • Image Stabilization
  • Filter Thread: 77mm
  • Max Format: 35mm FF
  • Canon EF Mount
  • Weight: 1190g.
  • Diameter: 90mm
  • Length: 221mm
  • Min Focus Distance:1.5m
  • Max Magnification:0.24x
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Canon 300mm f4.0L IS USM Overview

Canon 300mm f4.0L IS USM is an Auto Focus (AF) Telephoto Prime lens with 35mm FF max sensor coverage and it is designed to be used with Canon EF mount cameras.

Canon 300mm f4.0L IS USM is a member of Canon's EF L series of lenses. Below you can see the latest lenses in this series.

EF L Series Lenses in Canon EF Mount
Model Coverage Weight Focusing Street Price
Canon EF 400mm F2.8L IS III USM Lens Canon EF 400mm F2.8L IS III USM
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35mm FF 2840gr AF Amazon B&H Photo
Canon EF 600mm F4L IS III USM Lens Canon EF 600mm F4L IS III USM
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35mm FF 3050gr AF Amazon B&H Photo
Canon EF 70-200 F2.8L IS III USM Lens Canon EF 70-200 F2.8L IS III USM
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35mm FF 1440gr AF Amazon B&H Photo
Canon EF 70-200 F4L IS II USM Lens Canon EF 70-200 F4L IS II USM
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35mm FF 780gr AF Amazon B&H Photo
Canon TS-E 90mm F2.8L Macro Lens Canon TS-E 90mm F2.8L Macro
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35mm FF 915gr MF Amazon B&H Photo

Lens Mount

Canon 300mm f4.0L IS USM is compatible with cameras that have Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.

Focal Range

Canon 300mm f4.0L IS USM has a fixed focal lenght of 300mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 480mm.

Teleconverter Compatibility

Canon 300mm f4.0L IS USM is compatible with the Teleconverter lenses below:

  • Canon Extender EF 2X III for EF-Mount
  • Canon Extender EF 1.4X III for EF-Mount


Canon 300mm f4.0L IS USM Focal Range and Aperture Change with Teleconverter
Model Coverage with TC Aperture with TC Street Price
Canon Extender EF 2X III Lens Canon Extender EF 2X III 600 - 600mm F8 Amazon B&H Photo
Canon Extender EF 1.4X III Lens Canon Extender EF 1.4X III 420 - 420mm F5.6 Amazon B&H Photo

Optical Image Stabilization

Canon 300mm f4.0L IS USM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.

Maximum Magnification Ratio

Canon 300mm f4.0L IS USM has a Max Magnification Ratio of 0.24x and has a minimum focusing distance of 1.5m.

Aperture

Canon 300mm f4.0L IS USM has a max aperture of F4.0 and a minimum aperture of F32.0.

Optical Formula

Canon 300mm f4.0L IS USM's optical formula consists of 15 elements in 11 groups .

Lens Hood

Canon 300mm f4.0L IS USM comes with a built-in lens hood which is handy to reduce lens flare and glare in your photos.

Body Colour

Canon 300mm f4.0L IS USM is available in Grey and Black color.

Popular Comparisons of Canon 300mm f4.0L IS USM

Here is the eight most popular comparisons of Canon 300mm f4.0L IS USM amongst Camera Decision readers.

Top Alternatives of Canon 300mm f4.0L IS USM Lens
Model Coverage Weight Focusing Street Price
Nikon AF-S Nikkor 300mm f/4E PF ED VR Lens Nikon AF-S Nikkor 300mm f/4E PF ED VR
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35mm FF 750gr AF Amazon B&H Photo
Canon EF 300mm f2.8L IS II USM Lens Canon EF 300mm f2.8L IS II USM
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35mm FF 2400gr AF Amazon B&H Photo
Sigma 300mm F2.8 APO EX DG HSM Lens Sigma 300mm F2.8 APO EX DG HSM
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35mm FF 2400gr AF Amazon B&H Photo
Canon EF 500mm f4.0L IS II USM Lens Canon EF 500mm f4.0L IS II USM
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35mm FF 3190gr AF Amazon B&H Photo
Canon EF 300mm f2.8L IS USM Lens Canon EF 300mm f2.8L IS USM
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35mm FF 2550gr AF Amazon B&H Photo
Samyang Reflex 300mm f6.3 UMC CS Lens Samyang Reflex 300mm f6.3 UMC CS
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APS-C / DX 260gr MF Amazon B&H Photo
Sigma 50-500mm F4.5-6.3 DG OS HSM Lens Sigma 50-500mm F4.5-6.3 DG OS HSM
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35mm FF 1970gr AF Amazon B&H Photo
Sigma 105mm F1.4 DG HSM Art Lens Sigma 105mm F1.4 DG HSM Art
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35mm FF 1645gr AF Amazon B&H Photo

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**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Pros and Cons of Canon EF 300mm f4.0L IS USM


PROs
Image Stabilization
Built-in Autofocus
Hood supplied
Tripod Collar
Full-time Manual Focusing
Covers Full-Frame Sensor

CONs
Heavy
Pricey
Canon EF 300mm f4.0L IS USM Alternatives in Canon EF Mount
Model Coverage Weight Focusing Street Price
Canon EF 300mm f2.8L IS II USM Lens Canon EF 300mm f2.8L IS II USM
Compare
35mm FF 2400gr AF Amazon B&H Photo
Canon EF 300mm f2.8L IS USM Lens Canon EF 300mm f2.8L IS USM
Compare
35mm FF 2550gr AF Amazon B&H Photo
Sigma 300mm F2.8 APO EX DG HSM Lens Sigma 300mm F2.8 APO EX DG HSM
Compare
35mm FF 2400gr AF Amazon B&H Photo

Canon 300mm f4.0L IS USM Detailed Specifications


General
Brand Canon
Lens Type Prime
Lens Type Telephoto Prime
Lens Mount Canon EF
Max Format 35mm FF
Focal Range 300mm
Image Stabilization Yes
Colour Grey and Black
Zoom Method No Zoom
Power Zoom No Zoom
Zoom Lock No Zoom
Zoom Ratio 1.0X
APERTURE
Max Aperture F4.0
Min Aperture F32.0
Aperture Ring No
Diaphragm Blades 8
Optics
Optical Elements 15
Optical Groups 11

FOCUSING
Min Focus Distance 1.5m
Max Magnification 0.24X
Autofocus Yes
AF Motor Type Ultrasonic
Full Time Manual Yes
Focus Method Rear
Distance Scale Yes
DoF Scale Yes
PHYSICAL SPECS
Weight 1190g
Diameter 90mm
Length 221mm
Materials Metal barrel, metal mount
Weather Sealing Unknown
Filter Thread 77mm
Filter Notes -
Hood Supplied Yes
Tripod Collar Yes
Optional Accessories Hard Case LH-D27 Soft Case LZ1128
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Frequently Asked Questions about Canon EF 300mm f4.0L IS USM
is the Canon EF 300mm f4.0L IS USM a Weather Sealed lens?
What is the Minimum Focusing Distance of Canon EF 300mm f4.0L IS USM
is the Canon EF 300mm f4.0L IS USM an Autofocus (AF) lens?
What is the Filter Thread Size of Canon EF 300mm f4.0L IS USM
Does Canon EF 300mm f4.0L IS USM have Image Stabilization?
Does Canon EF 300mm f4.0L IS USM have Aperture Ring?
What is the Maximum Magnification Ratio of Canon EF 300mm f4.0L IS USM
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