I conducted a Q&A session with the developers to find out more about the D850. Join me as I gain a deeper understanding of the D850 in this interview that broadly covers three categories: "Concept", "Body", and "Technology". (Interviewer: Ryosuke Takahashi)
A: The D800 series are positioned as high-resolution cameras in the FX-format range. In addition, the D850 is a model that not only achieves a higher pixel count but has also been significantly improved in terms of multi-functionality and higher responsiveness.
A: We named it the D850 to make it clear that it offers greatly improved functionality and performance over the D810.
A: We increased the effective pixel count to 45.7-megapixels to meet our customers' needs in the ever-changing age, and to address the wide range of shooting environments that our customers operate in. In addition, we aimed to further expand the spectrum of images users can take by offering a wide variety of functionalities, such as high-speed continuous shooting of up to 7 fps.
A: One of the characteristics of Nikon D-SLRs is that the button layout does not vary greatly by model. That is why I think users of DX-format cameras such as the D500 would be able to operate the D850 with great familiarity.
A: We focused on the portability of the D850 by trimming away unnecessary bulk while also seeking to mould a camera that exudes personality. As for the pentaprism housing, we refined the design to better emphasize the direction of the path that light takes.
A: We decided upon 45.7-megapixels as it maintains a good balance: higher resolution while achieving high ISO sensitivity and high-speed continuous shooting. Another reason was to meet the pixel count requirements for an 8K resolution.
A: On the Nikon Japan website, there are 40 lenses recommended for the D850 (as at 24 August 2017). To take full advantage of the high resolution, I recommend using high-resolution NIKKOR lenses.
|Fixed Focal Length Lenses||Zoom Lenses||Macro Lenses / Special Purposes Lenses|
|AF-S NIKKOR 20mm f/1.8G ED||AF-S Fisheye NIKKOR 8-15mm f/3.5-4.5E ED||AF-S Micro NIKKOR 60mm f/2.8G ED|
|AF-S NIKKOR 24mm f/1.4G ED||AF-S NIKKOR 14-24mm f/2.8G ED||AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED|
|AF-S NIKKOR 24mm f/1.8G ED||AF-S NIKKOR 16-35mm f/4G ED VR||PC-E NIKKOR 24mm f/3.5D ED|
|AF-S NIKKOR 28mm f/1.4E ED||AF-S NIKKOR 24-70mm f/2.8G ED||PC-E Micro NIKKOR 45mm f/2.8D ED|
|AF-S NIKKOR 28mm f/1.8G||AF-S NIKKOR 24-70mm f/2.8E ED VR||PC-E Micro NIKKOR 85mm f/2.8D|
|AF-S NIKKOR 35mm f/1.4G||AF-S NIKKOR 24-120mm f/4G ED VR||PC NIKKOR 19mm f/4E ED|
|AF-S NIKKOR 35mm f/1.8G ED||AF-S VR Zoom-Nikkor 70-200mm f/2.8G IF-ED|
|AF-S NIKKOR 58mm f/1.4G||AF-S NIKKOR 70-200mm f/2.8G ED VR II|
|AF-S NIKKOR 85mm f/1.4G||AF-S NIKKOR 70-200mm f/2.8E FL ED VR|
|AF-S NIKKOR 85mm f/1.8G||AF-S NIKKOR 70-200mm f/4G ED VR|
|AF-S NIKKOR 105mm f/1.4E ED||AF-S NIKKOR 80-400mm f/4.5-5.6G ED VR|
|AI AF DC-Nikkor 105mm f/2D||AF-S NIKKOR 200-400mm f/4G ED VR II|
|AI AF DC-Nikkor 135mm f/2D||AF-S NIKKOR 200-500mm f/5.6E ED VR|
|AF-S NIKKOR 200mm f/2G ED VR II|
|AF-S NIKKOR 300mm f/2.8G ED VR II|
|AF-S NIKKOR 300mm f/4E PF ED VR|
|AF-S NIKKOR 400mm f/2.8E FL ED VR|
|AF-S NIKKOR 500mm f/4G ED VR|
|AF-S NIKKOR 500mm f/4E FL ED VR|
|AF-S NIKKOR 600mm f/4E FL ED VR|
|AF-S NIKKOR 800mm f/5.6E FL ED VR|
A: We achieved an effective pixel count of 45.7-megapixels by employing a backside illumination (BSI) FX-format full-frame CMOS sensor, and the perceived resolution also increases alongside the increased pixel count. Moreover, by optimising the sensor characteristics of the D850, we achieved high image quality that strikes a balance between noise and perceived sharpness even when shooting with high ISO sensitivity.
A: Yes, it can. We have an extensive lineup of NIKKOR lenses, but the shooting coverage is limited to that of DX-format (5,408 x 3,600) when using DX-format lenses.
A: We use magnesium alloy for the top, rear, and bottom external covers for increased robustness.
A: The image processor EXPEED5 enables high-speed processing of large amounts of data. Furthermore, the D850 supports XQD cards, which are capable of high-speed data transfer, as well as UHS-II-compatible SD cards. The camera writes data to the storage medium smoothly even when continuously shooting at a resolution of 45.7-megapixels.
A: Because it directs incident rays of light to the photodiodes more efficiently, it can achieve high sensitivity with a high resolution. One structural advantage of backside illumination is the high flexibility of the wiring, which allows the capacitance between the wires to be reduced. Data can be read quickly even at high resolutions, making it possible to reach 9 fps during continuous shooting.
A: The shutter counter-balancer(encircled in yellow) is located under the shutter, and it has the effect of cancelling vibration by travelling in the opposite direction of the shutter, which minimises mechanical vibrations.
A: We decided to omit the low-pass filter after taking into account that the pixel pitch decreases in proportion to the pixel count, which results in a relative reduction in the moiré effect. While it is difficult to use image processing to eliminate false colours and moiré, we have tuned our image processing parameters to keep false colours and moiré to an absolute minimum.
A: The viewfinder coverage of the D850 is about 1.15 times larger than that of the D810, which lets you focus on shooting. Moreover, given the high resolution of the D850, the magnification of the viewfinder is now 0.75x, which allows you to check the focus easier.