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Canon EF 300 mm f4.0 L USM IS

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EF 300 mm f4.0 L USM IS
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The light-gathering device of a camera, typically containing a group of compound lenses. Lenses come in different lengths, with very long lens used for long-distance photography.
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Info modified on: 17 May 2022 10:06:02
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Long product name Canon EF 300 mm f4.0 L USM IS :
The long product name of Canon EF 300 mm f4.0 L USM IS. For easy access to this data, refer to the "ProductDescription" block and the "ShortDesc" tag in XML or the "Description" block and the "LongProductName" tag in JSON.

EF 300 mm f4.0 L USM IS
Canon EF 300 mm f4.0 L USM IS:
The official description of Canon EF 300 mm f4.0 L USM IS as supplied by the manufacturer. For easy access to this data, refer to the "ProductDescription" block and the "LongDesc" tag in XML or the "Description" block and the "LongDesc" tag in JSON.

This lens is an EF 300mm f/4.0L USM.


Diagonal Angle of View: 8° 15' Lens Construction (elements/groups): 8/7 No. of Diaphragm blades: 8 Minimum Aperture: 32 Closest Focusing Distance (m): 2.5 Maximum Magnification (x): 0.13 AF Actuator: USM Filter Diameter (mm): 77

Compact L-series telephoto lens with an Image Stabilizer that compensates for camera shake with the equivalent effect of a shutter speed two stops faster

A more portable 300mm telephoto lens. Two UD-glass elements effectively correct secondary spectrum. Superb resolution and contrast. Astigmatism is also corrected, and background blur is soft and nice. Built-in hood with a locking mechanism.

Short summary description Canon EF 300 mm f4.0 L USM IS:
This short summary of the Canon EF 300 mm f4.0 L USM IS data-sheet is auto-generated and uses the product title and the first six key specs.

Canon EF 300 mm f4.0 L USM IS, 8/7, 420 mm

Long summary description Canon EF 300 mm f4.0 L USM IS:
This is an auto-generated long summary of Canon EF 300 mm f4.0 L USM IS based on the first three specs of the first five spec groups.

Canon EF 300 mm f4.0 L USM IS. Lens structure (elements/groups): 8/7, Lens viewing angle, diagonal: 8.6°, Focal length range: 420 mm. Filter size: 7.7 cm, Weight: 1.17 kg. Magnification: 0.13x

Lens system
Lens structure (elements/groups) *
Lens viewing angle, diagonal
Focal length range
420 mm
Thread diameter
9 cm
Weight & dimensions
1.17 kg
Filter size *
7.7 cm
Other features
Source Testseek summary Average rating
2022-10-17 18:56:23
Uk has collected 12 expert reviews for Canon EF 300 mm f4.0 L USM IS and the average expert rating is 70 of 100. The average score reflects the expert community’s view on this product. Click below and use Uk to see all ratings, product awards and conclusions.
Source Review comments Score
2022-10-17 18:56:23
The Canon EF 300mm f/4 USM L IS is a member of Canon's prestigious L-class (Luxury) series. It is, of course, far from being a cheap lens in absolute terms but still much more affordable than its f/2.8 cousin and as such a quite interesting option for...
Bottom line 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-...
2022-10-17 18:56:23
Optical Quality Ive tested this lens alongside all the Canon 75-300 and 100-300 zooms, as well as the EF300/2.8L, and its clear that it is a very good lens indeed. It is significantly sharper than the zooms (including the 100-300/5.6L) and holds its...
2022-10-17 18:56:23
This Canon 300mm f/4 is high performance, fast and lightweight telephoto lens for every Canon DSLR and 35mm EOS camera. It has great optics, fast autofocus and top-notch build quality.While most people prefer a 70-300 or 100-400mm zoom, other people prefe...
2022-10-17 18:56:23
The Canon EF 300mm f/4.0 L IS USM Lens is another excellent lens in the Canon L Series. The Canon EF 300mm f/4.0 L IS USM Lens is relatively light and very well built. The 300 f/4 IS is slightly lighter than the Canon EF 70-200mm f/2.8 L IS USM Lens...
2022-10-17 18:56:23
Recently I went to a Little League baseball game and shot with my Canon 5D Mark III and my newly purchased, 300mm f/4 L IS. It was the first time shooting sports with my new camera, so I was eager to see how the body would perform as well as the lens.The...
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