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  | sent on 25 Aprile 2019 Pros: Weight, size, contrast, sharpness Cons: none Opinion: This lens works fantastic with 5D MKIV. Great sharpness wide open with 1.4x TC or even 2x: still perfectly usable. You will notice that focusing speed goes down whole using TCs and sometimes miss a shot with 2x TC but hey...it's handholdable 800mm F8! Some people complained about "nervous background". I can't confirm: bokeh looks great as well. |
The following opinions have been automatically translated with Google Translate.
  | sent on 18 Dicembre 2020 Pros: Sharpness, portable compatibility with 1.4X and 2.0X SERIES III multipliers Cons: Price maybe, but compared to older siblings 400 f/4 and 600 f/4 much cheaper. Opinion: I have never written reviews of goals but in this case I feel obliged to do so given the level of satisfaction for this lens. I'm going to come from 400 f/5.6, so the jump in quality was expected, but I have to say it went beyond my expectations. It is light enough to be used freehand for hours without major problems, and is not particularly bulky during transport as long as you remove the lampshed. I was lucky enough to find a used copy, practically new getting a considerable saving compared to the new one. For the kind of photography I practice in 99 % of cases, this is a fantastic goal. Combined with the R6, it enhances the focus capabilities of this new mirrorless body, allowing you to focus more on the composition. I almost always use it with the 1.4 X III extender mounted and of course on the R6, always with the EF-RF adapter, without ever noticing any drop in autofocus performance. Maybe with small or very shy birds it is a short thread, but it always depends on where you photograph and for me it is such the advantage in terms of footprint and weight compared to the big brother 500mm f/4 (which I admit I have never tried) that compromise in my opinion makes a lot of sense. Another plus is the very effective image stabilizer, which combined with the IBIS of the R6 allows its use freehand in most cases. I find myself in the need to use the tripod more and more rarely and almost only when I mount the 2.0X III. |
  | sent on 30 Dicembre 2018 Pros: Lightweight, versatile, sniper autofocus. Sharpness at the top Cons: Price.. But the quality you pay Opinion: I come from lens Canon 500 F 4 L is II.. And so accustomed to him I was a little doubtful that the little one could be on par. Well the Canon 400 F 4 do II and a real gem. Very light, versatile allows you to use it freehand everywhere. In sports or wildlife photography is really deadly. Sharpness, blurred, colors are at the highest levels. Used with TC 1.4 x III and 2x III works very well at professional level.. I absolutely do not regret the 500. Only downside the price. But it's worth them all.. and fantastic. |
 | sent on 21 Dicembre 2017 Pros: Weight, speed and accuracy of AF, excellent sharpness, excellent yield with 1.4x III and 2x III multipliers, Cons: Transport case too small and there is no lens belt, rather high price. Opinion: Driven by positive reviews and looking for a quality, but at the same time transportable canvas, I decided to replace my old Canon 500 mm f4 IS with this lens and found it to be of a rather poor quality. From the first tests done with the Canon 7D Mk II on static subjects, located at distances between 10 and 40 meters, I realized that the lens fails to focus: the fire dances and the photos are 90% blurred , also a lot.rnThe real problem, however, lies in very little sharpness. Since I also own the Canon 400 mm f5.6, I made comparisons, always on the same static subjects, and I found that the old 400 mm f5.6 is always sharper than 400 mm IS DO II.rnSe it was just about problems focusing, the problem would be minor, but even in the few shots in focus you can clearly see the lack of sharpness and the fact that even fails to equalize the old 400 mm f5.6, which costs six times less. And do not tell me that 40 meters are too many, because the old 400 mm f5.6 to 40 meters is una lama.rnI cases, then, there are two: the lens has been assembled badly (it would be the minor problem), or the lens is of its nature not very clear (and in this second case the problem would be unsolvable). I definitely question the positive opinions that have given the other owners of this lens, I assume it is mine to have problems and then I packed it and sent it to the Canon center for a check and I await an answer. In any case, the judgment can only be totally negative because, if on a target of just over a thousand euros, such as 400 mm f5.6, you can also expect some factory defect, on a lens that costs € almost 7,000 problems do not have to be there.rnrnUpdate. A month after the purchase (as CPS Gold I should have repaired within 3 days !!!!) the goal and returned back with the words "Defect not found". According to the laboratory, therefore, the goal is perfect. I propose myselfin any case, to send it back together with the machine body, which try to carry out the calibration. According to them, then, it is normal that a target of € 7,000 is less clear than a lens of the same focal length but from € 1,200.RnI am increasingly convinced that Canon has come down a lot of level and that the laboratories pull to campare.rnA this point I would like to try to compare it with that of those who speak very well.rnUpdate update: Canon Italy, after three months of discussions, I replaced the view and the results I get now with the new one can not be absolutely comparable with those I got with the goal that they replaced me. This is very clear, even by mounting the 1.4x III multiplier and also with the 2x III multiplier. The lens is sharper even than the Canon 500 mm F / 4 IS, which I sold. I add one last thing: Canon Italia, although replacing the lens, did not want to admit that the previous objective had any kind of problem. |
 | sent on 21 Settembre 2017 Pros: Yield, speed and accuracy of AF, lightness, dimensions, multiplication Cons: Cost Opinion: After having long wished I have this lens for over a year and I can safely summarize my review in one word: excelled. Staying around the two kilograms of weight is easily transportable, even for hours during long hikes, and quietly usable even freehand. Excellent already at TA behaves very well even with the Canon 1.4 x III and contrary to what I expected does not show any decrease in yield as well as autofocus speed. The AF is always accurate and fast, to the point that very few times I have used the limiter. The stabilizer allows to shoot at very unthinkable times, I would say without a doubt that the four stops promised are real. Compared with the Canon 500/4 IS II of an output mate has proved quietly at par, much like quality that as AF speed. |
 | sent on 13 Luglio 2016 Pros: portability (weight and size), AF speed, clarity of the images even at T / A, tropicalization (true !!!) Cons: nothing!!! Opinion: A superb lens, for those who intend to make it a truly dynamic "use." I think I have it tested properly and has fully convinced me the incredible speed and clarity that brings out in all conditions. All this combined with the excellent transportability, a condition that makes the difference compared to the heavier 500 f4 II series, whose claim sharper really does seem to be proved, if not using it on a tripod and maybe with remote shooting! Who really wears the boots and not just the storage media, can not but love this lens unconditionally. As a vote would give a nice 10, with more than a praise !!! |
 | sent on 04 Maggio 2015 Pros: everything except the price Cons: the price indeed. Opinion: Optical fantastic, that I come from the 300 f4 I must say that there is a very significant difference, I had doubts that using it with the 7D old and 1.4x II did not render the best .... you will definitely like this, but I'm happy, just I can affiancherò to the 7D II and III 1.4x. Again, great optics and I intend to study it even better. |
 | sent on 21 Aprile 2015 Pros: Weight & dimensions, fast AF, stabilization, no AC, backlight resistance, extended series III extender, sharpness already in TA Cons: High, slightly unbalanced low price with a Canon 1 Series body Opinion: I suggest that before I write my impressions, I deliberately took time to test and try to get to know this magnificent optic better. Canon did a work, removing alibi and apologies to those who criticized the previous model for low backlighting, AC , Microcontroller, etc. I'm just starting to talk about clarity: the 400 DO Series II has reached levels close to Canon's other Series II supertels, delivering great images that are already fully open. For me it was a great surprise, especially if used with series III multipliers. The Digital Picture.com test (which, at the moment, I think is the most reliable for testing and method), shows a slight (slightly) lower clarity To 300 F2.8 II and 500 f4 II, to the most open diaphragms; Starting to close this difference, it shrinks, but it is still less clear than the other II series. However, we are only thinking on the basis of a visual evaluation of 100% crops, taken from studio shots and in optimum light conditions. Needless to say, such cThey will never be seen in nature. Therefore, these minimum differences will be more influenced by the photographer's ability and experience and the reflex used (if FF or APSC), which compared the quality of optical optics. Rn Despite the work done by Canon, 400 DO II pays, At least for now, the clutch of a series of prejudices (overwhelmed by the internet), linked to small flaws that characterized the first version. Nothing serious and / or unsurpassed, if you have the experience, the passion and the desire to take. RnNot to say that those that were defined as the "weaknesses" of the previous model were completely solved in this second version. Rn The chromatic aberration is non-existent. You notice a slight vignetting only to TA, but it is not at all annoying. RnThe backlighting is, in my opinion, great. RnThe AF speed is really impressive (as in the first version, the rest), especially if you are using itThis optics with latest generation reflexes (7DII, 5DIII, 1DX and latest models). Even by mounting the new series III extender, the AF remains fast. Only with 2X III extender the slowdown is more apparent, but the speed remains, however, at very good levels. The latest generation stabilization allows you to shoot free-hand with unmanageable times for a 400 mm focal length. There are 3 stabilization modes, as well as all other Series II telephoto lenses. The price is high, but in line with the other "whites" and is positioned between the 300 f2.8 and the 500 f4 series II. In conclusion: if you have the clear ideas and are looking for a lightweight, versatile, portable, high quality telephoto lens, and you think the 400mm focal point is a good compromise, the 400 DO II has no rivals on the market. Detail in crop100%, if you want f2.8 because otherwise it's dark if you need 100mm more because otherwise you are coRti ,,,, in short, if you are undecided, maybe it is best to bet on the 300 f2.8 series II or 500 f4 series II.rn - PS: I come from a 500mm f4 IS USM (Series I) and I do not feel the lack ! |
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