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

Model #2530A004

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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)

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.

The digital picture.34755376
22 July 2004

The Canon EF 300mm f/4L IS USM Lens is another excellent lens in the Canon L Series . While it has enough focal length to feel long, this very-well-built lens remains relatively small and light. Image quality from the 300 f/4L IS lens is excellent.

Lenstip com.34355424
13 November 2009

The Canon EF 300 mm f/4L IS USM is a very well-done lens, and the comparison between the cons and the pros can be the proof of it. Mind you the cons are the effect of the age – after all, the lens was launched 10 years ago.

  • +

    high build quality,, quite handy, taking into account the lens’s parameters and the fact that it is equipped with IS and USM,, excellent frame centre picture quality and very good at the borders,, very low chromatic aberration,, negligible distortion,, invisible coma,, low astigmatism,, almost zero...

  • -

    average work against bright light,, stabilization efficient only at the level of 2 EV.

Photozone de.34752480
29 August 2009

In the marketplace the Canon EF 300mm f/4 USM L IS is probably suffering from the fact that it is "only" a 300mm lens. There are numerous zoom lenses with such a tele setting out including the stiff in-house competition from the similar priced EF 100-400mm f/4.5-5.6 USM L IS and the new EF 70-300mm...

User Reviews
B h photo.32817553
12 September 2016

This lens is so fast focusing. I rented this lens last year and now I am going to add it to my gear bag. This example photo was a horrible yet amazing shot that I took with my 6D and this lens. A bird jump right out and the auto focus caught it and boom. Birdy bomb.

13 July 2017

I bought this lens to shoot plays and sports events. It has been acceptable for sports but I cannot use during indoor plays due to the the loud IS. It is too distracting to people anywhere near me. I sent in to Canon service and they say that it "performs to factory specs". I plan on selling it.

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 2.8.

  • +

    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.)

25 February 2010

I am still in the learning phase with this lens. So far so good. Very clear pictures...since it is a prime and not a zoom...and due to its length, I am trying to get used to running around for the perfect shot at ball games.

  • +

    Strong Construction, Nice Bokeh, Durable, Easily Interchangeable

  • -

    Slow Focus

Imaging resource.34355410
13 January 2012

Uma lente fantástica!!!!!!

  • +

    Exelente em todos os sentidos

  • -


B h photo.32817553
10 August 2017

I bought it used and found it to be an incredibly sharp and fast lens, despite it's an F4. I first used it in a Kids "Football Practice" and the images were amazing. FAR FAR better than I ever thought. The kids look like pros. It is a please to hold without a monopod.

B h photo.32817553
4 May 2017

Fantastic lens. I love my EF 70-300mm f/4.5-5.6L IS USM, but this fixed lens is so much crisper and better in every way at a fixed 300mm. Even with a 2x extender it's super crisp compared to my old lens.

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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