High pixels also earn telephoto DX mode D800 performs well.

IT 168 evaluated D800 with 36.3 million effective pixels, which attracted the attention of many landscape and advertising photographers. And some photographers who like to shoot wild animals actually have other expectations for the D800. Is it possible that the D800 with high pixel will be helpful to everyone after enabling DX shooting mode? Earn? To telephoto. After the author's test, this thing is sure to work.

The author compares D800 with the SLR D300s which Nikon uses DX size sensor to locate the highest position at present. Although D300s has been working hard in the market for many years, it has won a lot of praise for its excellent image quality and the performance of the reduced version of D3. If D800 can surpass D300s in DX format, it will be a good thing for photographers.

▲ Select DX shooting mode in the menu.

D800' s DX mode is actually a cutting sensor, which only shoots the DX-sized area in the center of the screen. So in theory, D800 should have the same image quality as FX mode, but with fewer pixels and longer equivalent focal length. But in a strict attitude, the author made a comparison with D300s.

After D800 uses DX format, the photo size is 4800? 3200, and the photo size taken by D300s is 4288? 2848。 The D800 has taken the lead in pixels.

▲ Comparison of screenshots of shooting proofs

In the above picture, two cameras shoot with automatic white balance, aperture F8 and ISO 100 sensitivity. First of all, because D800 adopts DX mode and has higher effective pixels, the picture after 100% screenshot is larger than D300s. Secondly, from the central area screenshot (top) and the edge screenshot (bottom) of the picture, we can see at a glance that D800 has better definition than D300s.

▲ Comparison of screenshots of shooting proofs

In the second scene, we use automatic white balance, F2.8 aperture and ISO 400 to shoot. Judging from the sharpness of stamens, Nikon D800 has better sharpness retention in ISO 400 than D300s. It seems that D800' s use of DX format is a complete cut of the original shooting picture of D800, and there will be no picture quality degradation.

▲ Comparison of screenshots of shooting proofs

In the last scene, the author used the automatic white balance and aperture of ISO 1600 and F 1.4 to shoot. In DX mode, the visual range of D800 and D300s is the same, the only difference is that the object in the picture is magnified when viewed at 100%.

I have to mention here that when shooting this scene, the settings of the two cameras are the same, but there are different photometric values when using the A file. I set the sensitivity to ISO 1600, the aperture to F 1.4, the shutter speed given by D800 is 1/800s, and that given by D300s is 1/400s. When shooting in the previous evaluation laboratory, I also encountered the situation that the exposure parameters given by D800 after metering were different from those given by other Nikon SLR. I don't know whether the promotion of D800 sensor has brought more accurate exposure results, but the exposure results given by D800 often make the author more satisfied.

It seems that D800' s use of DX format is a complete cut of the original shooting picture of D800, and there will be no picture quality degradation. Although after testing, the author got a completely consistent answer with the previous theory, but it can also help the author to make the following conclusions:

The D800 maintains excellent image quality and high definition in DX format, with 1.536 million pixels, which can fully meet the general output requirements, while the telephoto end earns 1.5 times DX effect, which is undoubtedly good news for users who need telephoto end. It is beneficial to shoot many scenes such as wildlife, sports themes, sunrise and sunset.

D800 high pixel power, DX format camera? Earn? The telephoto era is over. In other words, buying D800 is equivalent to buying a Nikon DX format SLR camera. Because the pixel gap between15.36 million pixels and Nikon's mainstream DX SLR camera is very small.

By the way, the post-editing after shooting in FX mode is actually the same as that with DX, right? Digital zoom? All right. However, for photographers who have a headache in the later stage of a large number of photos, it is very useful to consider shooting directly in DX mode.