Why does Nikon D850 improve the pixels and functions, but the picture quality drops obviously?

The appearance of Nikon D850 has not changed much compared with the previous generation D8 10. It cancels the internal flash and makes the warship department more compact. Backlight is added to the buttons on the back, which is convenient to use in dark light; In addition, D850 is also equipped with a 3.2-inch 2.36 million touch screen, which supports flip (similar to D750); Functionally, D850 goes further than D5, adding kneading function. The OVF magnification of the fuselage is increased to 0.75 times, and the storage interface of the fuselage also adopts SD(USH-II) and XQD dual card slots. The D850 is equipped with a 45.75 million effective pixel back-illuminated (BSI) sensor in FX format, and there is no low-pass filter. Native ISO 64~25600, and can be extended to 32 ~ 102400, which should be the best digital camera with low sensitivity in 135 frame at present.

Like the previous flagship, D850 also inherited D5' s EXPEED 5 image processor and 153 autofocus point (99-point cross, center supports -4EV, others -3EV), and 180000 pixel RGB focusing module was also inherited. Continuous shooting performance, D850 monomer state can reach 7fps, but after using MB-D 18 handle, it can be improved to 9fps. In terms of video performance, D850 supports the direct recording of 4K30P video in the machine, and can simultaneously record uncompressed 4:2:2 8-bit 4K ultra-HD video through an HDMI external device. Meanwhile, D850 can also record 120/ 100p@30/25p slow-motion video. It is worth noting that D850 video recording adopts full sensor framing, and there is no need to convert when shooting video.

In addition to the traditional mechanical shutter (up to 1/8000s), the D850 also has a built-in electronic shutter, which can be used for silent shooting in time-lapse photography and live view shooting to reduce mechanical vibration and wear. Speaking of time-lapse photography, D850 also supports the shooting of 8K time-lapse photos. Due to the addition of new technology CMOS, the endurance of D850 reaches 1840, which is quite strong in the same type of products. Besides the first time, D850 also provides new functions such as 1: 1 cropping format, film remake, even exposure, automatic white balance optimization and calibration.