Sheep O 102400 brightens the night. Nikon D3s evaluation.

IT 168 evaluation center Nikon D3S is a professional SLR model based on D3, which has fast response speed, higher usable sensitivity, supports D-Movie video shooting function, and is especially suitable for shooting dynamic and telephoto subjects such as sports and wildlife. D3S adopts 1265438+ million-pixel FX format (Quan Huafu) digital image sensor, with the highest sensitivity equivalent to ISO 102400. In DX format, the continuous shooting speed can reach 1 1 frame per second.

Nikon D3S

D3S continues the professional fuselage design from D3 without much improvement. The durable alloy body integrates the vertical racket handle, and the viewfinder picture coverage reaches 100%. The 3-inch display on the back of the fuselage shows the clarity of 920,000 points. These professional designs have met the demanding needs of professional users from all aspects, and they are the Nikon digital SLR cameras that can best meet the needs of news photography at present.

The back of D3S's fuselage

The top of the fuselage of the D3S

Various data interfaces including MIC and HDMI are provided on the side of D3S fuselage.

D3S fuselage provides double CF card slots, which is beneficial to data security and capacity improvement.

The viewfinder of D3S has a built-in eyepiece shutter, which is convenient for blocking harmful light when taking selfies.

Preview button and custom function button beside the D3S lens bayonet.

D3S system switch

Vertical shutter button of D3S

D3S has added a special one? Lu? Button, easy to use instant view mode at any time, and added the left side of the fuselage? Information? button

New features and response speed

Nikon D3 and D3X (for more information about them, you can link to Nikon D3 evaluation.

"and"

Nikon D3X evaluation

The system design of D3S is quite mature, and D3S has not been greatly improved. However, on the basis of the previous model, the cropping format of 1.2x(30x20mm) is added, and the menu library is expanded, which can store up to four groups of exposure modes, shutter speed and aperture values. What's new? Quiet? The shooting mode can help the photographer to reduce the shutter release and mirror action noise caused by shooting in severe cases.

D3S has? q？ Quiet shooting mode

D3S adds 1.2x image area mode.

The maximum continuous shooting speed of D3S can reach 1 1 sheet per second.

The response speed of D3S is very fast, and the startup and shutter lag are almost the shortest among the existing SLR cameras, which ensures that the camera can respond to the photographer's instructions at any time and will not miss the critical moment. The extremely high continuous shooting speed and large body memory further ensure the photographer's grasp of key moments. The following is the continuous shooting response speed of D3S in various formats measured with SanDisk Extreme Pro CF card:

File saving format

Maximum continuous shooting velocity (amplitude/second)

Maximum speed duration

Original foreign exchange

nine

39

Foreign exchange JPEG L fine

nine

Eighty-nine

FX RAW+JPEG L fine

nine

35

DX RAW

1 1

65

DX JPEG L fine

1 1

130

The significance of such high-speed response performance to dynamic object shooting needs no elaboration. Then let's take a look at the performance of our rival Canon's latest model: Although the highest continuous shooting speed of Canon EOS 1D Mark IV is a little lower, its imaging frame is APS-H, and the effective pixel reaches 1665438+ million.

Noise reduction function on

High sensitivity and imaging performance

Driven by Nikon D3S and Canon EOS 1D Mark IV, the sensitivity of digital SLR cameras has reached 65,438+million. What does ISO 102400 mean for digital SLR cameras? For example, if the highest sensitivity of a camera is ISO 12800 (note that this is already very high, for example, Canon EOS 7D can be extended to ISO 12800 at the highest, while Nikon D300s can only reach ISO 6400), and the exposure is required to be F/4, 1/30 seconds in a specified environment, such a shutter. However, if the sensitivity of ISO 102400 is used, only F/4, 1/250 seconds of exposure is needed. Under the condition of constant aperture, the shutter speed can be increased by 8 times, and the photos are not so easy to blur. Next, let's take a look at the imaging quality of D3S at various sensitivities (the minimum can be extended to L 1, which is equivalent to ISO 100):

Opening effect of noise reduction function

As far as the picture effect is concerned, as long as the sensitivity is not higher than ISO 800, the pictures taken by D3S are very clean. Until ISO 12800, the noise in the picture is relatively uniform, and the picture effect of 100% is still acceptable. In the extended three-speed high-sensitivity shooting picture, there are occasional abnormal colors like dots or flakes, and the details and layering effect of the picture are obviously reduced, but the overall color saturation and hue deviation are not too big. For such a high sensitivity, it is quite difficult to achieve such an effect. After turning on the noise reduction function, the picture looks smoother and more delicate, but the sharpness of the details is more lost.

The imaging resolution of D3S at the lowest sensitivity of ISO 200.

The imaging resolution of D3S at high sensitivity is ISO 12800.

Through the contrast results of imaging resolution test, it can be seen that the imaging resolution of D3S is about 2 100LW/PH at low sensitivity ISO 200, but the resolution of the same object is reduced to about 1900LW/PH at high sensitivity ISO 200, and the picture effect looks rough.

Imaging chromatic aberration of D3S in standard mode

Color temperature error of D3S image in automatic white balance mode

Judging from the imaging color deviation in the standard mode, the imaging color of D3S is not exaggerated, except for the dark skin color, most of the colors are more accurate and plain. The automatic white balance mode is slightly warmer under the artificial light source with standard color temperature of 5000K, which is not as accurate as some high-end Canon models.

High-sensitivity imaging samples and the viewpoint of IT 168 evaluation center

The following are some high-sensitivity samples taken by D3S. Photos are stored in JPG L Fine format, and various noise reduction functions are turned off when taking photos. Judging from the proofs, under the extremely high sensitivity (extended third gear), the image noise of D3S will affect the detail performance of the picture and the color saturation will also decrease, but this high sensitivity performance is still very meaningful to ensure the news value of the photo.

IT 168 Evaluation Center's point of view: Simply put, Nikon D3S seems to only add video shooting function on the basis of D3, which improves the sensitivity, but it is of great significance to the news machine. In fact, D3S also added the body information button and silent shooting mode, providing more shooting formats. Although these are all changes in details, they are more perfect progress. We believe that Nikon D3S can achieve the professional realm of man-machine integration with photographers. Of course, if the photographer's target media requires a higher screen size, which is Canon EOS 1D Mark IV with higher pixels but lower continuous shooting speed or Nikon D3S? Deadly enemy? .

Disclaimer: The evaluation content of this article is based on the samples provided by Nikon's product public relations company. Our evaluation conclusion is only responsible for the individual who sent the sample, and there is no guarantee that the individual can represent the overall level of the products on the market.