Canon Telephoto EF 300mm f/4.0L IS Image Stabilizer USM Autofocus Lens

Model #2530A004

USA Version
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Dimensions (dxl) Approx. 3.5 x 8.7" (8.89 x 22.10 cm)
Filter thread 77 mm
Weight 2.62 lb (1.19 kg)


Aperture Maximum: f/4
Minimum: f/32
Minimum focus distance 4.92' (1.50 m)
Magnification 0.24x
Camera mount type Canon EF
Format compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
Angle of view
Maximum reproduction ratio 1:4.1
Diaphragm blades 8
Focal length 300 mm
Groups/elements 11/15


Tripod collar Yes
Image stabilization Yes
Autofocus Yes
Expert Reviews
Slr lens and camera reviews.33034498
1 June 2009

Considering the overall performance, build quality, features and reasonable pricing (reasonable is a relative term here), Canon EF 300mm f/4L IS USM measures up quite nicely against other long telephoto lenses available on the market.

29 July 2008

The build quality alone qualifies the price of this lens, which appears as though it will outlast any owner! The built in hood is a neat touch that just about escapes getting in the way of filters. The only let down is the slightly sluggish (for the class of lens) autofocus.

  • +

    Excellent build quality, Good contrast and colour rendition, Retractable lens hood a nice touch.

  • -

    AF a little slow for class of lens, Resolution may not be up to future sensors (although pixel race has now slowed)

Photo net.32822890
29 April 2008

This article covers both the old (non-image stabilized) and new (IS) versions of the Canon EOS 300/4. The photos are by Philip Greenspun and were taken with a Canon EOS 5D , ( compare prices ) ( review ) for the Africa articles in our Travel section .

The digital picture.32823291
3 April 2007

Is the Canon EF 300mm f/4L IS USM Lens right for you? Learn all you need to know in's review!

Images by william castleman.34355705
2 May 2008

This is a sharp, compact and light weight, image-stabilized lens that packs a lot of performance into a relatively affordable package. There is a widespread view that the image stabilized (IS) version of the EF 300mm f/4 is not quite as sharp as the earlier non-IS view.

User Reviews
B h photo.32817553
25 February 2014

I have used my new lens just twice and can already see the difference between the sharpness at 300mm on my 70-300mm zoom and this 300mm prime.I purchased the lens because I wanted to improve my performance at 300mm and had stellar comments on it from friends who use this lens and whose images I...

  • +

    Durable, Easily Interchangeable, Fast / accurate auto-focus, Nice Bokeh, Strong Construction

  • -


1 December 2014

Consider the following: The 300mm f4 is ~$1400 and weighs 1.2kg, the 300mm f2.8 IS II costs $6,600 and weighs 2.4kg. With the money saved one can buy a few other lenses or a good full frame body while ALSO saving the back aches associated with lugging 2.4kg of f2.8 glass around on all day...

  • +

    This is an impressive lens which was released 1997 and is still in production because it is inexpensive, lightweight and only one stop slower than the f2.8 Canon lenses lenses at ~1/5th the cost

  • -

    Photos produced with the 1.4 MK III extender look terrible in large formats/prints but acceptable at smaller formats (about the size of a sheet of paper). Just buy the 400mm instead of cheaping out on an extender and your photos will be professional quality.

29 June 2014

This is my second L series lens, and I've had the same problem with both of them, neither auto-focuses accurately on one of the 60 D bodies that I own. The problem may be with the one body, but all my other lenses, Canon or other brands, work well with that body.

  • +

    Superior build quality

  • -

    Slow auto-focus

2 May 2014

Took this lens on a whale watching workshop and it performed awesomely. It is tack sharp and an amazing piece of equipment. Would recommend it to anyone that wants or needs a longer reach.

  • +

    Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Rugged, Strong Construction

  • -


3 March 2014

I got this lens to replace my Canon 300 2.8 lens. I now have a Canon 200-400 f4 EX 1.4 that I primarily use for sports. The old 300 was the one I used to use for that purpose. Now I find that I still need the 300 mm size for daily news assignments, but don't want to carry the extra bulk of the...

  • +

    Sharp. Lightweight - no need for a monopod. Built-in lens shade is very convenient. Not much longer than a 70-200. Easy to pack.

  • -

    It has the dreaded Canon tripod/monopod ring that, in time, degrades. Never carry a lens on a removable ring with a monopod unless the camera is attached. The lens can slip out of the ring and smash into the ground. (Don't ask how I know this.)

19 October 2015

This is a very good lens from Canon, but it's in need of a Mark II update. Unless you need the wider F4 aperture at 300mm or better sharpness on the edges/corners, I don't see much of a reason to buy this over the newer 70-300 L. The newer 70-300L is actually slightly sharper in the center.

Review buydig com.33956271
26 December 2013

I bought this lens mostly to photograph wildlife and I have taken some great shots with it in the short time I have had it. The lens is light weight and easy to carry around in the field for long periods of time without causing fatigue.

  • +

    Rugged, Consistent Output, Lightweight, Strong Construction, Easily Interchangeable

Product Description
Compact L-series telephoto lens with an Image Stabilizer which compensates for camera shake with the equivalent effect of a shutter speed two stops faster. Two Image Stabilizer modes are provided: Stabilizer Mode 1 (the same mode featured on the EF 75-300mm f/4-5.6 IS USM) and the new Stabilizer Mode 2 which steadies the image during horizontal or vertical panning. Mode 2 detects the panning direction automatically. The closest focusing distance is 4.9 feet (1.5 m).

The Canon 300mm F/4L is commonly used for Macro photography, Photojournalism, Sports/action, Travel, Wildlife, Wildlife photos and more.The Canon 300mm F/4L is most used by customers who consider themselves to be a Enthusiast, Photo enthusiast, Semi-professional, Semi-pro photographer among others.The Canon 300mm F/4L is popular because customers like the following qualities of the Canon 300mm F/4L: Clear glass, Consistent output, Durable, Easily interchangeable, Easily mounted, Fast / accurate auto-focus, Lightweight, Nice bokeh, Rugged, Simple controls, Strong construction to mention just a few.
Product Highlights
  • EF Mount L-Series Lens
  • Aperture Range: f/4-32
  • Two UD Lens Elements
  • Two Mode Optical Image Stabilization
  • Ultrasonic Focus Motor
  • Manual Focus Override
  • Minimum Focus Distance: 4.9'
  • Detachable Tripod Collar
  • Fits Extenders EF1.4X II and EF2X II
  • 77mm Filter Diameter
Average Expert Score
Average User Score
In The Box
  • Canon EF 300mm f/4L IS USM Lens
  • E-77U 77mm Snap-On Lens Cap
  • Lens Dust Cap E (Rear)
  • LZ1128 Lens Case
  • Tripod Mount Ring
  • Strap for Case
  • Built-In Lens Hood
  • Limited 1-Year Warranty
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