June 29, 2022

“Hachirokusan” weighing about 2.4kg has been released! Nikon Super Telephoto Lens “NIKKOR Z 800mm f / 6.3 VR S” Review

4 min read

The Nikon ” NIKKOR Z 800mm f / 6.3 VR S ” is a super telephoto lens of the interchangeable lens “NIKKOR Z lens” for the Nikon Z series. It is one that is commonly called “Hachirokusan” because of its focal length and open aperture specifications. As of April 2022, it has the longest focal length among the “NIKKOR Z lenses”, and it is a noteworthy product that is attracting a lot of attention from people who take full-scale moving object photography in wild birds, animals, sports, etc. Now that I have the opportunity to try out this featured lens, I would like to review the image quality and operability in detail.
By adopting a PF lens, both high optical performance and compactness and weight reduction are achieved.
Since the birth of the mirrorless camera system “Z Mount System” in August 2018, Nikon has released a number of attractive “NIKKOR Z lenses” with distinctive descriptive power and specifications. The NIKKOR Z 58mm f / 0.95 S Noct, which has a large aperture of F0.95, and the NIKKOR Z 50mm f / 1.2 S standard lens, which is popular for its neat depiction, are compatible with a focal length of 14mm. The “NIKKOR Z 14-24mm f / 2.8 S”, which is compact and lightweight despite being an ultra-wide-angle zoom lens, is a typical example, but the “NIKKOR Z 800mm f / 6.3 VR S” introduced this time is also comparable to such lenses. It is one with the charm of.

Main features of “NIKKOR Z 800mm f / 6.3 VR S”
・ Super telephoto lens for Z mount with focal distance 800mm / open aperture value F6.3
・ High performance “S-Line” among “NIKKOR Z lens”
・ Can be expanded up to 1120mm when using the teleconverter “TC-1.4x” and 1600mm when using the “TC-2.0x”
・ Significantly smaller and lighter by using a PF lens・
-Weight: Approximately 2385 g

・ Number of aperture blades: 9 (circular aperture)
・ IF (internal focus) method with no change in total length due to focusing
・ STM is used for high-speed, high-performance and quiet AF drive・ Designed for movie shooting such as suppression of
focus breathing and smooth aperture control
・ Correction effect 5.0-step camera shake correction (VR) mechanism (5.5 steps when Synchro VR is applied)
・ High robustness and dust-proof / drip-proof Performance, Fluorine coat on the front of the lens
・ Attachment size: 46mm (built-in type)
・ Price.com lowest price 788,040 yen (tax included, as of April 30, 2022)

The biggest feature is that it is a super-telephoto lens with a focal length of 800 mm, but it is significantly smaller and lighter without compromising on optical performance. Its size is about 140 (maximum diameter) x 385 (total length) mm, and it weighs about 2385 g. Although the maximum aperture value is different, the maximum diameter is about 20mm and the total length is about 76mm shorter than the “AF-S NIKKOR 800mm f / 5.6E FL ED VR” for single-lens reflex cameras. The weight is as light as about 2205g, and considering the spec of a focal length of 800mm, it fits in a compact size that has never been seen before.
The reason why we were able to design this compactly is that we adopted a PF (Phase Fresnel) lens for the first time as a “NIKKOR Z lens”. A PF lens is a lens that strongly corrects chromatic aberration by utilizing the diffraction phenomenon of light. It is also used in the “AF-S NIKKOR 300mm f / 4E PF ED VR” and “AF-S NIKKOR 500mm f / 5.6E PF ED VR” for single-lens reflex cameras. It is a lens that can be achromatic more efficiently than a general camera lens, shortens the overall length of the optical system, and contributes to making the lens barrel smaller and lighter.

However, PF lenses also have disadvantages. That is, when there is a strong light source inside and outside the screen, a ring-shaped colored flare (PF flare) tends to appear around the light source. With this lens, as with the “AF-S NIKKOR 300mm f / 4E PF ED VR” and “AF-S NIKKOR 500mm f / 5.6E PF ED VR”, the flare that occurs is installed in the genuine software “NX Studio”. It is possible to reduce it with the “PF flare control” function.

The lens configuration is 22 elements in 14 groups. “AF-S NIKKOR 800mm f / 5.6E FL ED VR” for single-lens reflex by using one SR lens and three ED lenses that effectively suppress axial chromatic aberration in addition to one PF lens. Achieves high optical performance comparable to. Looking at the MTF curve, the curve with a spatial frequency of 10 lines / mm from the widest aperture is almost stuck to the maximum value of 1, and 30 lines / mm also exceeds 0.9 at the four corners, showing the high performance. .. Furthermore, in addition to the adoption of “Nano Crystal Coat”, the ghost is also reduced by optimizing the shape and arrangement of the PF lens.
We are particular about operability and usability, and the knurling and the shape of the small dents are different around the L-Fn2 button, the control ring, and the focus ring, so that you can understand it just by touching it without looking at it. It has become. The surface of the lens barrel was extensively coated with a non-slip rubber coating. The attached dedicated lens hood “HB-104” has also been improved to a lock mechanism that can be removed with a single touch.

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