Nikon D3X test report: measurements
Measurements for this review have been performed using Imatest. See the FAQ for the test method. The conclusion and real life performance of the Nikon D3X will be shown in our Nikon D3X review. For those who seriously think about buying a Nikon D3x, our review is much too short. See the Nikon D3X reviews at Ken Rockwell, Thom Hogan and DPReview!
|The Nikon D3X delivers, with a good lens like a Sigma 50mm macro, a jpg file with an average resolution of 2000 LW/PH. This corresponds to the resolution we have measured a Nikon 5D MK2, almost as many megapixels as the Nikon D3X. Striking is the Nikon D3X, the resolution of jpg files at the lower ISO settings higher, while the resolution of RAW files that have been developed Lightroom constant. For this we have no explanation. |
With a standard processing of RAW files in Lightroom, averaged over the entire ISO range, a slightly greater sharpness impression is obtained, which translates into an average resolution of 2200 LW/PH. That is lower than the resolution of RAW files from Canon 5D MK3, using the same treatment in Lightroom. If some extra attention is paid to the Nikon D3X NEF files, or when Capture NX is applied, you will become an even higher resolution.
The Nikon D800E scores better than the Nikon D3X, in terms of resolution, which isn't surprising given the higher number of megapixels and the absence of a Moire filter. But if you print an image on A4 paper, you will not see that difference.
The Nikon D3x scores very well in terms of noise. In particular, the 50 ISO setting is worth mentioning. The effect of low noise you see, is reflected in the high usable dynamic range of the Nikon D3X at 50 ISO.
We know from experience that if the noise is less than 2.5%, an A3 + size print can be made without the noise being disturbing.
|Below are examples of a gray card, shot at different ISO settings. The crops show a 100% detail of a RAW file without any noise reduction. By applying noise reduction to RAW files, you will always get better results than the standard jpg files. |
Many cameras have high ISO settings with such a high noise, it renders useless images. Not the Nikon D3x. Below at the right you see a ISO 6400 jpg file at 100% magnification. You can print it without further processing, when the image is not too magnified.
Color accuracy @ daylight
|The Nikon D3X delivers RAW files with a very good color reproduction in daylight. In terms of color rendition and white balance in daylight it is better than all other cameras we've tested so far. |
The illustration shows the color errors of an ISO 100 color jpg image which was shot in daylight. The further the ideal color (square) is removed from the color of the camera (round), the greater the color difference. For the test method and explanation of terms, see FAQ
Color accuracy @ tungsten light
In artificial light you can, for both jpg and RAW files, not blindly rely on the auto white balance, as clearly seen in the results shown here for a 200 ISO jpg file. The images show an orange cast in incandescent light. However, the Nikon D3x scores here, like with the color accuracy in daylight, relatively well compared to other cameras we've tested previously. The color reproduction is virtually independent of the ISO setting. The measurement results are so close, that the best result was achieved with a 50 ISO RAW file and the worst color with a 100 ISO jpg file.