Canon EF 400mm f/4.0 DO IS USM : Specifications and Opinions

Canon EF 400mm f/4.0 DO IS USM

The Canon EF 400mm f/4.0 DO IS USM is a supertele lens for FF and APS-C, manufactured from 2000 to 2014 (discontinued). The focus is done by Ultrasonic AF Motor (Ring-USM), it has image stabilization. The average price was 5900 €;

21 users have given it an average vote of 9.0 out of 10.

MOUNT

This lens is available with the following mounts:

Canon EF: this lens is compatible with reflex fullframe and APS-C Canon EF.

Specifications
Focal lenght	400 mm
Angle of view	6.2°
Format	FF, APS-C
Max. aperture	f/4
Aperture blades	8
Lenses/Groups	17 elements in 13 groups
Min. focus distance	3.50 meters
Reproduction ratio	0.12x
Features
Stabilization	Yes (built in lens)
Focus	Ultrasonic AF Motor (Ring-USM)
Internal Focus	Yes
Built and notes
Tripod ring	Yes
Extenders	Yes
Filters	52 mm
Lens hood	Yes, supplied
Weather sealing	Yes
Weight	1940 g
Dimensions	128 x 233 mm
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Reviews

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The following opinions have been automatically translated with Google Translate.

SimoneOssola

sent on 02 Dicembre 2017

Pros: Lightness of the optics, tropicalized, excellent lens

Cons: The price of the new one of the used one, difficulty in finding it used.

Opinion: The catch used a year and a half ago to make the trip to Namibia and I immediately appreciated the lightness and compactness of this perspective. There is inside my photo backpack. Holds multiple shots well. Excellent both on ff and on other bodies. Very pleased with the purchase done.rnThe advice to all those who are looking for an excellent biancone is to be used for photo hunting and sport. rn

Shel

sent on 15 Febbraio 2014

Pros: ideal scope for sports or nature photos. Weight under two Kg with excellent quality lenses. Trpicalizzazione and robustness very evident. Extender usable maintaining speed hooking fast autofocus. Love at first sight

Cons: The price, of course, is a bit 'high.

Opinion: With 400mm especially in combination with APS-C is created optimal length: with all the lightness does not create big problems in the transfers. These are optical high-performance, high-class and easy set neither weight nor dimensions. I believe that the usability of this optic makes it immediately apprezzabilissimo.

Elleemme

sent on 28 Ottobre 2012

Pros: Scope 400mm useful for hunting wildlife in Italy, light weight (only 1940 grams), size (slightly shorter than the canon 300mm f2 8 l is usm), weather sealing, maintenance of AF with the 1.4x extender on SLR aps -C and ff, maintenance of AF SLR with 2X extender on aps-H (series canon 1D mark II, IIn, III and IV), f fast (motor usm), stabilization almost silent, this adjustment of the distance af exercise in step 23: 3.5 m to infinity and 8m to infinity - Mode stabilization: 2. A stabilization in both directions, and one for the vertical stabilization only, to allow for panning - focal length / weight unbeatable exploitability free hand, filter holder inside the rear, excellent containment of the distortion and vignetting.

Cons: Quote from a new range of professionals, difficult to find a used, a minimum distance of focus of 3.5 meters, micro-contrast, backlit little resistance to direct.

Opinion: It 's rare use in full backlighting so its lower resistance than other alternatives may not preoccupare.rnHa microcontrast less than the canon 400mm f.4, 6 and the canon 300mm f2 8 l is usm with 1.4 extender x but is brighter than the first (vs. f.4 f.5, 6) and lighter than the 2nd (1940 g vs. 2750 g extender with 1-4x). rnUnito an SLR + extender + battery-grip is everything well balanced without tiring your arms and / or the muscles of the photographer. In cases where we are certain that the person will be at a distance of less than 3.5 meters, we can resort to the use of extension tubes Canon ef-12mm and 25mm. Good on long trips on foot because the weight is. No need for heavy tripod, just use media with a max aperture of only 5Kg.rnSfruttabilità from f.4 to f.8. Best sharpness in f.5, 6 to 300mm when used with the 1.4x extender board from f.6, 3 to f.8.rnSigla DO (Diffractive Optical element): rnL'idea initial lens was to create a compact 400 mm and leggero.rnPer accorciarand an objective it was necessary to use a more convergent front lens, so even thicker; this, however, introduces more chromatic aberrations which must be counterbalanced by another group ottico.rnL 'use of a multi-layer diffractive front element (DO) has enabled the technical canon contain strongly chromatic aberration, using inter alia a lens very light and small thickness; This made it possible to further reduce the size of the barilotto.rnLa same technology was then used in the construction of medium telephoto Canon 70-300mm DO. rnI 2 objectives are identified outside the green thread on the place barilotto.rn

Prof Chaos

sent on 05 Ottobre 2011

Pros: Weight, speed AF, image stabilization, robustness, compactness.

Cons: Price, lack of contrast in critical lighting.

Opinion: Add to what was said by Fabio, a feature of considerable importance. I was able to test for a few hours the 500 f / 4 Is, and I find that the Do 400 with the 1.4x teleconverter has a reactivity in focusing greater than 500mm smooth (using both goals with the focus limiter , not in full). I have not done extensive testing, but I am convinced of what I assert. Actually surprised me. At the end of the day, in the long reflections to choose a specific lens definitive avifauna, I find that the 400 can only be God, and that there are, to date, alternatives. Of course, all favoring my way to photograph without using a tripod and aps-c, otherwise my ratings would be different. Greetings to all ... Ps Although a bit 'ot, I would like to bring another experience on the Canon Ef 500 f / 4 L Is and Canon Ef 500 f/4.5 L (I write here because it is not yet possible to review the old Canon 500mm) . The focus speed of the two 500 in question, I found it very similar in the two objectives. I would expect large differences, however I have found that the evolution of f / 4 was not, in this respect, so relevant ... We will see the new 500 f / 4 II ...

Fabio Ferretto

sent on 24 Settembre 2011

Pros: Weight and size, excellent sharpness and AF speed can be multiplied without major problems.

Cons: High cost, file with little contrast, suffers from the backlight.

Opinion: I have always read and heard mixed reviews on this catastrophic lens ..... but the technical characteristics were interesting and I decided to buy it. I wanted a lightweight lens for birds that were multipliable the 300 2.8 though great was duplicated in 90% of cases with obvious repercussions on the quality and speed AF. The 400 f / 4 DO is was the perfect solution for me, could be multiplied and the paper could provide a good AF speed and quality. In practice, all I had read in various forums was fake! And 'no doubt with a view fantastic and unique. It 'compact and weighs very little, excellent sharpness at room temperature and stand well the multiplier. The focus is very fast even with the 1.4x extender. All this has a price, and the Canon 400 DO costs a lot. Suffer from the competition of the Canon 300 2.8 and the bad reputation is perhaps date from the early examples not quite perfect. Of course, there are also downsides, the files have low contrast (correctable in post-production) and suffers backlit. And 'the ideal lens for birds on APSC is nearly 1000mm with quality and speed .... all freehand :)

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Canon EF 400mm f/4.0 DO IS USM : Specifications and Opinions

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Photos taken with Canon EF 400mm f/4.0 DO IS USM