jeudi 15 mars 2012

Les tests plus poussés

Enfin, les premiers tests arrivent. Après les premières impressions, nous pouvons nous baser sur quelque chose de plus consistant.

12.06 - dpreview.com Nikon-D800E - Nikon-D800


11.06 - lense.fr

  • + Capteur Plein format 36 Mpx
  • + boitier tropicalisé
  • + Excellente gestion du bruit jusqu’à 6400 ISO
  • + Bonne gestion des couleurs
  • + Autofocus rapide et précis
  • + Vidéo FullHD 1080@30i/s
  • + Export vidéo non-compressé
  • - Rafale faiblarde
  • - Limité à 25600 ISO
  • - Autofocus décevant en liveView
  • - Ergonomie du mode vidéo à revoir

24.05 - Test complet de focus-numerique

Difficile de ne pas être emballé par le Nikon D800. La gestion du bruit électronique est remarquable et les images JPeg facilement exploitables jusqu'à 6400 voire 12800 ISO. L'imposante définition permet même des tirages en A4 à 25600 ISO. En observant les images à 100% sur écran, on s'aperçoit que le D800 ne souffre pas les hésitations : l'autofocus doit être précis (les problèmes de front / back focus sont beaucoup plus perceptibles), la stabilisation parfaite et les optiques d'excellente qualité. C'est le prix à payer pour cette définition.
Au final, le D800 est un excellent appareil photo et une caméra de bon aloi. Il reçoit donc logiquement un recommandé.

17.05 - Paysages avec Nick Devlin



14.05 - Philip Bloom - comparatif / test vidéo

09.05 - dpreview complet



05.05 - ronmartblog.com

While I don’t feel that the ISO performance is worth a hoot after ISO 3200 (more on that in my next article), there’s a ton of goodness at lower ISO’s with this camera. The detail that can be resolved out of images is just sick, but it’s huge files mean you’ll need a big ass Drobo. Disks are cheap so maybe it’s worth it, but the question you really need to ask yourself what’s the output size you’ll be using these images for? If it’s for the web then it’s a lot of wasted pixels unless you frequently do major crops to makeup for a shortcoming in telephoto lenses.

The dynamic range is impressive and the bokeh you get is pretty sweet. However, I have noticed that with this many megapixels the camera is very unforgiving to motion shake, so I found myself needing to shoot a minimum of 1/200 sec when I was at 200mm otherwise I got blurry shots (and yes VR was on in the correct mode). It’s clear this camera wants to be on a tripod and longer exposures will be its answer to lack of high ISO noise performance (where it’s sibling the D7000 thrives).

My early advice is for Canon 5D Mark III shooters to stay put as I don’t think this warrants jumping ship (as I once thought the D3s was versus the 1D Mark III). For D700 owners who need burst mode performance or > ISO 3200 then I think you are better off not making the jump.

However, if you are a Nikon studio photographer or compulsive tripod shooter, then I think this camera might be a perfect fit as the image detail is just awesome. Those who give it the right light are rewarded handsomely and it’s no slouch up to ISO 3200.

03.05 - CNet UK



02.05 - Comparaison D800 - D800e

26.04 - Comparaison D800 - D800e

24.04 - Le monde de la photo

23.04 - Comparaison D4-D800 par Kelvin

22.04 - S2P mag

22.04 - Tests vidéo par Focus numérique

22.04 - Comparaison Canon-Nikon par Fred Miranda

21.04 - Chasseur d'images

20.04 - Réponse Photo

Le résumé se trouve dans un message séparé vu la grandeur que prend celui-ci

19.04 - whatdigitalcamera.com


In many ways the D800 doesn't feel like a natural upgrade to the D700, but rather a new line in Nikon's full-frame DSLR line-up.

While the D700 was a great all-round full-frame DSLR, the D800 is slightly more specialised - whereas the D700 was seen as a baby D3, the D800 could be seen as more of a baby D3X with even great resolving power. 

The ISO performance sees it loose out to the competition ever so slightly if you're going to be shooting handheld in lowlight, while the frame rate, even in DX mode can make it feel slow when shooting action. That's not to say you won't be able to achieve great shots in these situations, but you'll just have to work a little harder.

These negatives are to some extent brought about by the camera's main appeal, resolution. If you're prepared to make small sacrifices in other areas, then the results from the D800 will blow you away. The amount of detail rendered is excellent, while the tonal range very broad, allowing you to produce super-sized, high-quality prints. Combine that with the quality feel, extensive feature set and polished handling, and the D800 is an excellent DSLR that won't disappoint. 

19.04 - TechRadar

Rating: 4.5/5


















For

  • Excellent detail resolution
  • Extensive dynamic range
  • Large images
  • Superb AF system

Against

  • Large files sizes
  • JPEG HDR mode
  • No in-camera rating

Est-ce que Nikon a poussé trop loin les pixels?
Our tests reveal that the Nikon D800 is capable of resolving a huge amount of detail, in fact it's not far behind the medium-format Pentax 645D
However, we would recommend sticking within the native sensitivity setting (ISO 100-6400) wherever possible, and the upper expansion sensitivity values (equivalent to ISO 12800 and ISO 25600) are reserved for needs-must situations.
We might expect dynamic range to suffer as a result of the sensor having such a high pixel count, but the D800 impresses here as well.

It's great to find that the D800 isn't just a triumph of numbers, and that the 35.3Mp sensor actually delivers on its promise – capturing bags of detail. The surprise bonus is that noise is actually pretty well controlled and the dynamic range is very impressive.
For those interested in stepping up to a full-frame camera, the D800 represents a good investment. You get pretty much all of the best features of the D4 in a more compact and lighter body, with a much higher pixel count for just shy of half of the price.


14.04 - Mike Drew - sport



13.04 - Roman Lehmann

En allemand. Tests du D800 à New-York

http://www.nikon.ch/fr_CH/news_room/news_releases_main.page?Period=&Quarter=0&SY=0&ID=templatedata\fr_CH\news_article\data\Press_NYC_FR

13.04 - Digital Rev D4 ou D800?



11.04 - ipaimpress.com/nikon-d800/

I should note that if one has worked with the D700, the learning curve is greatly reduced.
In terms of pure image quality, I must say that the first few images that I took were quite impressive.
Some have asked me why I would ever need 36 megapixels to start with.  The answer is two fold – one is create large prints that rival mid-format cameras that retain high quality and the second is to be able to make crops to compliment the reach of my telephotos.
In terms of color, to me the images from the D800 had a new depth and pop to them. In terms of resolution – well this became a whole new experience to see such clarity in the images.  I was quite impressed.
I found that to obtain high IQ at 36 megapixels required more attention to precise focus and less camera shake than I had been used to. I found that my sharpest images were shot around f/8 and that stopping down past f/11 the IQ dropped somewhat under magnification.  (This was first reported in the Nikon D800 Technical Guide as lens diffraction.)  I also found that at 36 megapixels, the slightest camera shake had more of an impact than with the D700.  If I shot at 1/125 – I now had to bump that up to 1/250+ or use a tripod.
Some feel that there are too many unresolved issues with the new D800.  Some feel that this is the best camera ever. This is really a personal decision and your budget needs to also be considered.  My D800 plus battery grip, battery and eyecup was over $3,600.  (Still far less than the D4.) But, I have to say I have been able to get far more ‘keepers’ with the D800 than I have had with my other two cameras. So far this has been one of the best investments that I have made

11.04 - Comparaison D3s-D7000-D800 par Cary Jordan

The D800 is an extremely versatile camera that can provide amazing 36.3 MP files in full-frame FX mode, whilst containing the ability to moon-light as the best APS-C DX format camera on the market. The D800/E has several other crop modes as well as the DX crop mode discussed here, which helps to make the D800/E one of the most versatile cameras on the market today.

10.04 - snapsort.com

Joli score chez snapsort:



08.04 - Olivier Caenen

J’ai pu réaliser quelques images comparatives entre ces deux boitiers plein-format ,les plus denses en pixel actuellement disponibles (24,5 Mpx pour le D3X , 36,3 Mpx pour le D800)
Le D800 a un rendu très doux avec un grand potentiel d’accentuation si nécessaire,les flous arrière-plan semblent un peu plus beau qu’avec le D3X à PO avec la même focale.
La définition et la gestion du bruit ici à 1000 iso sont superbes.

Ce boitier semble une réussite et fait aussi bien ou mieux que le D3X en qualité d’image surtout dans les hautes sensibilités.
Il reste à confirmer la qualité de son AF sur le terrain et dans la photo dynamique.
Il parait le complément idéal de mon futur Nikon D4 ,dont il a le gros avantage de partager les batteries …

02.04 - Nathan Elson - Studio


nathanelsonblog.com

There is no real winner in terms of portrait photography. Yes, the D800 does produce larger files, but if I were a Canon shooter that wouldn’t be enough to make me want to switch. On that same note, yes the Canon does focus slightly faster, but again as a Nikon shooter I’m not looking to sell any of my Nikon gear. Owning either camera should make any photographer extremely happy with their purchase.

02.04 - pocket-lint.com

02.04 - gizmodo.com

This is one of the best cameras you can buy for three grand, period. But it's been overshadowed by the standard-bearer in this category, the Canon 5D Mark III. At a $500 lower price, could the Nikon D800 be a better buy?

Trying to convert hundreds of RAW files to JPEGs? You better have a couple of hours to spare. That said, the camera's JPEG quality is very good, so you don't always have to shoot RAW.

Still, it's impressive that Nikon has tripled the resolution of the camera without hurting ISO ratings.

As for actually shooting with the D800 at night, the camera is capable of some great things, assuming you can get them in focus.

Like
The Nikon D800 takes beautiful photos in nearly any situation. In daylight, the camera is completely satisfying. It shoots minuscule details and vivid color like no other camera out there. In the dark, the high-resolution sensor holds up impressively in its standard ISO range, and photos taken at up to ISO 1600 and often ISO 3200 have so little noise that they're usable without editing. The camera is built to survive, and manipulating your shot with the buttons on the camera without ever going into a menu is smart, streamlined and intuitive. As for video, the D800 delivers what the D700 lacked: versatile filmmaker-quality footage in a DSLR package. The clean HDMI output opens the door to a new world of post-production.

No Like
When a camera is fantastic—and expensive—the small shortcomings get frustrating. The D800's biggest disappointment is the auto-focus. It works, but not as fluidly as the rest of the camera. The high-resolution sensor was an awesome and potentially visionary addition to the camera. Nikon should have developed an auto-focus tailored to make it work. Instead, they reused existing technology. Yes, this is a pro's camera, and most photographers won't expect it do all the thinking on its own. But this feature just seems sloppy.

Conclusion
If you're toting around a D700 and tons of nice glass, this is as close as you're going to get to an essential upgrade. You, Nikon devotee, you should buy this camera. It's a better still camera than the D700, it adds video, and the fantastic image sensor takes images to a new level of quality. The high-resolution sensor was a gutsy move, and it paid off, as Nikon proved that you can pack pixels into a camera without ruining its performance in the dark.

But for the camera consumer with a budget over $3,000 and no brand loyalty, it's a tough call between the D800 and the 5D Mark III. They're both excellent cameras, and they're good at different things. After testing each for a week apiece, we're still asking whether the benefits of the Nikon's high-resolution sensor outweigh the Canon's versatility.

Gallery

30.03 - ephotozine.com
The Nikon D800 offers unprecedented resolution at an unthought of price point, packed full of features, many from the Nikon D4 that is almost twice the price. Build quality is very good, and the camera gives excellent handling with a solid metal body and weather sealing the camera should be suitable for almost any landscape or outdoors project. Value for money is a strong point, with cameras with a similar resolution costing significantly more (at least 3 times more).

Image quality is stunning in every way. To make the most of it you'll need to have high quality lenses, for example the Nikkor 24-70mm f/2.8G lens used in this review is available for around £1200. It will be interesting seeing how Nikon's lens range is put under additional scrutiny by this camera.

The Nikon D800 performs extremely well and is deserving of our Editor's Choice award. Nikon have another winning camera on their hands and I expect demand will be extremely high for a long time to come. The D800 is extremely desirable, so much so that I can see people selling an arm and a leg to get it.



30.03 - mansurovs.com
I consider the Nikon D800 to be a breakthrough camera, something we have not seen since Nikon introduced its first full-frame D3.

The Nikon D800 is a revolutionary product that once again raises the bar on image quality, dynamic range, autofocus and even noise performance – all without the high price tag of a pro camera attached to it. Sure it has its share of problems with its rather slow speed (FPS) and average battery life, but these problems are rather insignificant, given what we are getting as a total package.

I believe Nikon made a smart move in positioning its current and future full-frame (FX) lines.

With the introduction of the D800, many photographers thought that Nikon is specifically targeting one group of photographers, while completely ignoring others. In fact, as you will see later on in this review, it is actually not the case. There is a reason why I called the Nikon D800 a “general-purpose, high-resolution” camera – because it can be effectively used for any sort of photography.


Handling-wise, the D800 is superb – definitely better than the D700 I have been so used to.

DXOMark made some scientific measurements of sensor performance on the D800 and they found it to beat all other sensors they have evaluated to date, including some high-end medium format cameras. But the biggest surprise for a lot of people was the high ISO performance of the Nikon D800 that DXOMark shows.

Noise performance on the Nikon D800 is almost identical to the D4 and D3s all the way to ISO 12,800 – it only falls behind at ISO 25,600 at which point it is maxed out (the Nikon D4 and D3s continue at much higher ISO levels).

Are the DXOMark measurements accurate? Yes, they are and I believe they have a solid sensor testing methodology. I performed my own tests of high ISO performance between the Nikon D4, D3s and D3 and my test data closely matched the DXOMark results.

I tried mounting the TC-20E III on both the Nikon 200-400mm f/4 and the Nikon 300mm f/4 AF-S and I was able to acquire focus at maximum aperture of f/8. AF is not ultra fast at such a small aperture, but it does work, which is great news for wildlife photographers.
If you shoot in indoor/low-light environments, you will be surprised by just how well the new AF system works in poor conditions.

If you want to have sharp images at 100% view, then you need to be more careful with camera shake and you need to learn proper hand-holding techniques. Similar to the Nikon D7000, the D800 is more prone to any sort of movement that causes blur than the D700. If you shoot with longer portrait/telephoto lenses and want to have tack sharp images, you should consider increasing your shutter speed even more. I quickly learned that shooting at the shutter speed that is equal to the focal length often produced slightly blurry images at 100% view, so I had to use faster shutter speeds to get the maximum resolution out of my lenses and the D800.

Both the Nikon D4 and the D800 feature a brand new and sophisticated 3D Color Matrix Meter III exposure metering system with a 91,000-pixel RGB sensor, face recognition and a database of 30,000 images. Compare that to the 3D Color Matrix Metering II system with only 1,005-pixel RGB sensor on the Nikon D700! The new metering system is excellent.

http://mansurovs.com/wp-content/uploads/2012/03/Nikon-D800-Image-Samples-3.jpg




24.03 - Digital Rev




23.03 - zone-numerique.com - commentaires sur les résultats DxO
Le Nikon D800 a tout d'un phénomène. Il semble excellent dans tous les domaines et sera à l'aise aussi bien en photo de studio, en portrait, qu'en photo de paysage et, même en basse lumière, il ne sera pas déposé par les boitiers 100% pros à la définition plus modeste.
Nous attendons les premières mesures DxO de piqué du D800 sur les principaux objectifs Nikkor.

les données mesurées des performances du capteur APS-C 236 mégapixels du Nikon D800 vont faire un sacré ramdam.

Des performances de premier rang et vient bousculer une hiérarchie récemment installée : plage dynamique record, profondeur de couleur la plus élevée de tous les reflex numériques non moyen format et sensibilité ISO de l'acabit de celle du Nikon D4, une surprise !

Le Nikon D800 se paie donc le luxe de venir monter sur la troisième marche du podium des appareils les plus sensibles après les Nikon D3s et D4.

Sa qualité d'image, si la dynamique est un critère important pour de nombreux photographes, à 100 ISO, sera stratosphérique du fait du cumul de sa définition extrême et de ses performances dans les autres domaines : sensibilité, profondeur de couleur et dynamique.

23.03 - dxomark.com
Nouveau record chez DXO pour le D800: 95



23.03 - dpreview.com - first impressions

23.03 - Ming Thein

23.03 - cnet.com body review




 
Really, the question here isn't, "Is the D800 a great camera?" Nikon would really have had to botch something to get a "no" on that. The questions are whether it's a significantly better camera than the D700, whether it's good enough to merit switching from another system (say, a Canon), and, for some, whether it's worth the price premium of jumping from an APS-C system to full-frame. The answers are yes, it depends, and maybe.

All that said, If you're a pro Nikon shooter who doesn't need the extra power of the D4 but needs the best photo quality possible at all ISO sensitivities, the D800 just became a must-have.

19.03 - dpreview.com  - test en studio

15.03 - focus-numerique.com - gestion du bruit

JPG:
De 100 à 400 ISO, le bruit électronique est pratiquement imperceptible sur écran (100%). Cette plage de sensibilité est donc utilisable sans perte visible de qualité.
Au final, toute la plage ISO 100-6400 ISO semble facilement exploitable. Une belle performance pour le D800 donc.
2 800 et 25 600 ISO. Dès le premier cran, la perte de qualité est sensible : la dynamique baisse, le grain est grossier, les premières marbrures violacées font leur apparition et le lissage dilue le plus fin détails. Toutefois, les images sont loin d'être ridicules et la haute définition autorise des tirages 20x30 sans difficultés. Naturellement, les choses se gâtent à 25 600 ISO avec un grain moins subtile et plus coloré, des détails dégradés. Toutefois, pour des tirages A4 , la qualité pourra dans certaines situations, être acceptable et un peu de post traitement pour débrouiller des cas plus complexe.

Au final, le Nikon D800 fait donc honneur à la marque avec une plage 100-6400 ISO d'excellente facture et des valeurs Hi-1 et Hi-2 encore parfaitement exploitables.




15.03 - Imaging-resource.com

ISO 50


ISO 100

15.03 - eoshd.com - hdmi output

  • The HDMI signal was output to Avid DNxHD, 176Mbit CBR (constant bitrate)
  • Colour is 10bit 4-2-2 although it is not clear if the Nikon D800 is doing 10bit or if that is just on the external encoding
    (I suggest the latter)
  • The output is 1080i (no 1080p – what the fuuuuu!!)
  • It also does 720p at up to 60fps
Result in youtube

The blog suggests (please bear in mind the rough translation and take this with a pinch of salt) that no audio is output via HDMI, and since the internal D800 encoder switches off the stream to the memory card when HDMI is active, you’ll have to sync audio from a separate device. There’s no timecode, which makes audio sync less convenient and the blog requests that Nikon add it in future firmware updates.

The footage should grade very well and the camera should have a lot of dynamic range in this mode with smoother highlight roll off, providing scaling from the sensor is not hurting that too much – which it may do. I have not yet tested this grading theory since you cannot grade the YouTube material for obvious reasons! Best of all for me is the improvement to colour – 4:2:2 and if it is correct, 10 bit – is a huge benefit.

I’m disappointed that it appears to be output in 1080i rather than native 24p or 30p and that resolution from the sensor is unimproved and pretty far off what the Canon C300 or Panasonic GH2 manages from 8MP and 16MP sensors respectively.

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