Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   After I discussed the NIKKOR Z50mmf/1.8S and Z85mmf/1.8S lenses with Nikon Tokyo in August, this month I once again talked to Tokyo, Japan. I will continue to discuss the Z24-200mmF4-6.3VR lens. The engineers in Tokyo, Japan also gave me a very detailed answer on the Z24-200mmF4-6.3VR. At the same time, Nikon Tokyo also gave me a very detailed answer to the NIKKOR Z14-24mmf Some questions about the two new lenses /2.8S and Z50mmf/1.2S have been answered.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   first from left: Nikkor Z24-200mmf/4-6.3VR mechanical design in charge: Sakai Takahiro Second left: NIKKOR Z24-200mmf/4-6.3VR optical design in charge: Miwa Tetsushi Second right: NIKKOR Z14-24mmf/2.8S optical design in charge: Yamaguchi Satoru right one: Nikkor Z14-24mmf/2.8S mechanical design in charge: Eiichiro Ima

  Due to the epidemic situation, this developer interview is the same as the last developer interview. It is online The way of communication was through remote meetings with Mr. Hiroyuki Ishigami, Nikon Imaging Division/UX Planning Department/UX Planning Division II, Nikon Optical Headquarters/The Third Design Division/Optical Design Division I, who developed Z24-200mmF4-6.3VR Mr. Tetsushi Miwa, Nikon Optics Headquarters/Second Design Department/First Design Division Mechanical Design Manager Takahiro Sakai and Nikon Optics Headquarters/ Third Design Division/Second Optics Division Optical Design Manager who developed the NIKKOR Z14-24mmf/2.8S Mr. Yamaguchi Satoru, Nikon Optics Headquarters/Second Development Department/First Design Division Mechanical Design Division Mr. Eiichiro Kanagawa conducted an interview. The following is an article I wrote based on the content of this interview. I hope I will be interested in NIKKOR Z mount lenses. Of users will have some help.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

  Left: Nick Responsible for mechanical design of Z24-200mmf/4-6.3VR: Takahiro Sakai Right: Nikkor Z24-200mmf/4-6.3VR Responsible for optical design: Miwa Tetsushi

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

  Left: NIKKOR Z14-24mmf/2.8S Optical design: Yamaguchi Satoru Right: NIKKOR Z14-24mmf/2.8S Mechanical Design Responsibility: Imam Eiichiro

   NIKKOR Z24-200mmf/4-6.3VR is an FX format lens released by Nikon in February this year. Its focal length covers from 24mm to 200mm focal length range. Since its design concept is “small, lightweight and high image quality”, there is no sacrifice in image quality. By making the front of the lens smaller, a large-diameter mount, and optimizing the specifications, high image quality can be maintained.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z24 -200mmf/4-6.3VR

   NIKKOR Z24-200mmf/4-6.3VR covers a wide viewing angle of focal length 24-200mm, and a single lens can handle multiple scenes. It also provides a high-power zoom and a compact and lightweight lens that is about 200g lighter than other competitors, so it is not easy to feel tired even if it is carried for a long time. And make full use of the high optical performance of the Z-mount, which has changed people’s general impression of high-power zoom lenses, which can leave high-definition images no matter when taking photos or videos.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z24 -200mmf/4-6.3VR

  Thanks to the large-diameter bayonet system and short flange distance, the rear of the lens can be made larger, so although the lens size is small, it can also provide good Optical performance. In addition, by adopting the anti-reflection high-definition coating that has been used for S-type lenses, this is the first time that it has been used for Z-mount lenses other than S-types, which can reduce ghosting and glare caused by incident light perpendicular to the lens surface. Light. In addition, a new type of aluminum alloy bayonet to achieve a compact and lightweight design. Not only small and light, but also strong and durable. Nikon also considered the balance of the center of gravity when designing.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z24 -200mmf/4-6.3VR

   I have used this lens for a long time, so I have a relatively good understanding of this lens, but the developer interview with Nikon engineers still tells me A lot of new things, such as when designing this lens, considering that it is not an S-Line lens, the priority is to provide a more affordable lens, so the VR vibration reduction and AF/MF switch are omitted. It needs to be adjusted through the body.

   In fact, more people still care about why NIKKOR Z24-200mmf/4-6.3VR did not extend the focal length to 240mm! Nikon’s explanation for this is to consider the balance between compactness and weight reduction, and even if this lens is cropped to obtain the competing 240mm focal length or even the 300mm focal length, the image quality is also very good. In addition to the focal length, the aperture of this lens is not very large, so do we have to rely on the high sense of the camera in a dim environment? The answer is not so. Thinking about the previous Nikon DX70-300mmF4.5-6.3, you can probably understand the performance of the NIKKOR Z24-200mmf/4-6.3VR in low light, not to mention this lens with anti-shake function.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z24 -200mmf/4-6.3VR

   To be honest, when I used the NIKKOR Z24-200mmf/4-6.3VR before, its good picture quality performance brought me no small surprises, and To achieve high-quality performance, this is entirely due to Nikon’s excellent optical design, through the use of 1 aspherical low-dispersion lens, 2 low-dispersion lenses and 2 aspherical lenses, while achieving high optical performance and compactness化.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z24 -200mmf/4-6.3VR sample

   In fact, regarding the focal length, Nikon has another explanation, that is, from the point of view of mechanical design, increasing the zoom magnification will make the design and performance more difficult. In order to meet the needs of users to improve rendering performance and appreciate image cropping, priority is given to setting the focal length to 200mm. Moreover, in response to the need to “take only one lens to travel”, it has been determined that the lens should be made as small as possible and provide high-quality solutions. Nikon will give priority to the three elements of small size, light weight and high image quality for product development. .

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z24 -200mmf/4-6.3VR sample

   NIKKOR Z24-200mmf/4-6.3VR’s anti-shake function can only be turned on or off through the body, the VR vibration reduction of the lens and the VR vibration reduction of the camera When used together, it can realize 5-axis damping compensation. Since the camera can compensate for the shake that only the lens cannot compensate, it can compensate for shake in two directions when the camera is not equipped with VR vibration reduction, and when the camera is equipped with VR vibration reduction, it can achieve a five-axis compensation effect. Contains 2 types of VR damping compensation for displacement and rotation. Many people may think that a lens with such a focal length is not equipped with anti-shake, but for a telephoto lens with a long focal length, when shooting videos and viewing on the LCD screen, the camera’s VR vibration reduction alone cannot ensure sufficient The vibration reduction effect, so the lens is also equipped with VR vibration reduction function.

   In fact, it’s not an exaggeration to say that 2020 is the first year of national video. More and more people are entering the creation of videos. This also requires more equipment to have the ability of static photos and dynamic videos. Nick The Z24-200mmf/4-6.3VR adopts the STM stepping motor focusing system, which can significantly reduce the angle of view change during focusing, which in turn makes this lens have a very small focus breathing effect.

   The above are some of the main points of discussion about the NIKKOR Z24-200mmf/4-6.3VR lens between me and Tokyo, Japan. In addition, I also discussed the NIKKOR’s newly released Nikkor lens with Tokyo. I have discussed the two new lenses Z14-24mmf/2.8S and Z50mmf/1.2S, here I also summarize them.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z14 -24mmf/2.8S

   NIKKOR Z14-24mmf/2.8S mainly considers two goals at the beginning of the design. The first is to make the front of the lens not too bulky and to achieve good optics Performance and compact and lightweight design, the second is to meet the many needs of being able to install screw-in filters and sheet filters, so when designing this lens, the focal length was not changed to 12-24mmf/2.8.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z14 -24mmf/2.8S sample

No matter whether the lens of    NIKKOR Z series is S-Line type or non-S-Line type lens, the overall autofocus performance is still very good, even if it is released this time The aperture of Z50mmf/1.2S has reached f/1.2, and there is no problem in focusing accuracy. Since I have not received the evaluation lens so far, in order for everyone to better understand, it can be considered that the accuracy of Z50mmf/1.2S is the same as F1.8 The lens is the same.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z50mmf /1.2S

   NIKKOR Z50mmf/1.2S realizes an ideal lens structure with symmetry due to the large-diameter Z mount. By adopting this lens structure, the light balance is almost the same before and after the aperture change, and the light transmitted to the sensor will not be forcibly refracted. Therefore, the rendering ability of the lens is significantly improved. In this way, the smooth blur and high resolution provided by the shallow depth of field of f/1.2 can be achieved at the same time. But what this brings is that the volume of Z50mmf/1.2S has become very large.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z50mmf /1.2S optical structure

   The two NIKKOR Z14-24mmf/2.8S and Z50mmf/1.2S lenses released by Nikon this time do not have anti-shake function, but as mentioned earlier, when the camera is not equipped When VR vibration is reduced, it can compensate for shaking in two directions. Therefore, when the two NIKKOR Z14-24mmf/2.8S and Z50mmf/1.2S lenses are used with Nikon Z series mirrorless cameras, they also have a certain anti-shake function.

Nikkor Z 24-200mm developer interview, by the way, chat with two new heads

   NIKKOR Z50mmf /1.2S sample

   and users who are familiar with Nikon may know that the NIKKOR Z50mm prime lens currently has f/1.8. This time f/1.2 is released, but f/1.4 is not released. In fact, in my opinion, Nikon at this time is more like the Z50mmf/1.2S released first in order to demonstrate the advantages of the Z mount. As for the Z50mmf/1.4, I believe that it will also be seen in the near future.

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