圖片與資料來源:DPReview

DPReview獨家取得了AF-S Nikkor 70-200mm f/4G ED VR的測試機會,
雖然他們不能存照片來讓我們看看光學表現如何,
但至少也就外觀、手感、對焦速度及VR能力做了一些評論,以下是全文翻譯。


The new AF-S Nikkor 70-200mm f/4G ED VR is a compact, fixed-aperture F4 zoom designed for use on Nikon's new generation of FX format DSLRs. Smaller in all dimensions than its more costly F2.8 cousin, the slimmed-down $1400 lens has been long-awaited by Nikon users looking jealously at Canon's venerable EF 70-200mm f/4L IS  USM.
新小小黑AF-S Nikkor 70-200mm f/4G ED VR是一支紮實、恆定f4變焦,
設計用於Nikon新一代的FX規格的DSLR系列的一顆鏡頭。
在各尺寸上都小於它的f2.8親戚,這支纖細的1400美元鏡頭是Nikon用家長期引頸期盼的
(期間忌妒得看著C家的EF 70-200mm f/4L IS USM)

Dpreview is at the Photo Plus Expo tradeshow in New York, and we were given an exclusive opportunity to get our hands on a pre-production sample of the new 70-200mm. Although we weren't able to save any images,
we were able to get a feel for the handling, the AF speed, and the efficiency of the claimed 5-stop Vibration
Reduction system.

Dpreview出席了紐約的Photo Plus Expo我們獲得了獨家的機會可以實際把玩這棵70-200的原型款。
雖然我們不能存下它拍出的相片,我們還是可以感受一下它的手感、自動對焦速度和宣稱高達五級的防手震系統。

Starting with the handling, the first thing that you notice when you pick up the new lens is how small it is,
relative to Nikon's flagship F2.8 variant. Slimmer, lighter, and smaller in all dimensions, the new 70-200mm
F4 is a genuinely portable optic, and in terms of handling, an ideal companion for one of Nikon's smaller FX
DSLRs, like the D800/E or recently-announced D600. Something that's easy to miss in the spec-sheet is that
the new lens has a filter thread of 67mm, compared to the more common 77mm on other high-end Nikon
zooms. This makes it slightly but noticeably slimmer than Nikon's
AF-S Nikkor 24-120mm f/4G ED VR zoom;
compared to Canon's equivalent model, it's about the same size, but around 90g / 3.2oz heavier. There's no
official word on exactly how weatherproof the new lens is, but there's the usual rubber gasket around the
mount, which makes a water and dust-resistant seal between camera and lens.

先從手感開始講起,你最先注意到的是,相對於f2.8鏡皇,這顆新鏡有多麼的小。
更瘦、更輕,整體尺寸都比較小,新的70-200mm F4在手感上來說真的是一顆攜帶性十足的鏡頭!
搭配Nikon體積較小的FX機種,例如D800/E或最近發表的D600,將會非常理想。
在規格表裡常被忽視的一件事就是67mm的口徑,不同於Nikon其他比較高檔變焦鏡頭裡常見的77mm。
因此跟AF-S Nikkor 24-120mm f/4G ED VR相比,有些微但感受得到的纖細感。
和Canon的同級鏡頭相比,他們尺寸差不多,但大約重了90克。
官方沒有說這顆新鏡的耐候能力如何,但接環的部分有橡膠密封環,
因此在相機與鏡頭相接處應該有一定的防滴防塵能力。

On a D600, focusing feels all but instant (despite the insistence of Nikon reps that the sample we used was
'unfinished') and the zoom action is smooth and well-damped.
Because all of the lens movement (focus and zooming) is internal, the lens' dimensions never change.

接在D600上,對焦感覺幾乎是即時的(儘管Nikon堅持說我們用的這支是"未完成品"),變焦相當滑順且有適當的阻力。由於整顆鏡是內對焦及內變焦,所以使用時並不會伸長或縮短。

圖片來源:DPReview
The new AF-S Nikkor 70-200mm f/4G ED VR is comprised of 20 elements in 14 groups,
and features a constant aperture of F4. Internal zoom and focus means that its length doesn't change when zooming or focusing, and the closest focusing distance is 1 meter.
The tripod mount ring is an optional extra - yours for just $224.

新AF-S Nikkor 70-200mm f/4G ED VR是由20枚14群鏡片組成,f4恆定光圈,內對焦及內變焦,
所以對焦或變焦時長度不變,最近對焦距離是一公尺。
腳架環需要額外花224美金購買。


圖片來源:DPReview
Smaller in all dimensions than the more costly F2.8 70-200mm, the new F4 zoom is slimmer than the AF-S
Nikkor 24-120mm f/4G ED VR and about half as long again. It features a 67mm filter thread, unlike the more
standard (for high-end Nikkors) 77mm.

各尺寸都較昂貴的f2.8 70-200來得小,也比24-120來得細且大約長了一半。
它使用67mm的濾鏡環,有別於其他高階鏡的77mm。




圖片來源:DPReview
Mounted on a D600, the combination is surprisingly compact and very well-balanced.
接在D600上,這個組合令人驚訝的非常紮實且平衡良好。

In common with several recent high-end Nikon lenses, the AF-S Nikkor 70-200mm f/4G ED VR features a Nano Crystal coated element, which should reduce flare and internal reflections. Although not as versatile in poor
light as its 2.8 cousin, the new lens features an improved Vibration Reduction system which Nikon claims
should be able to deliver up to 5 EV of stabilization, potentially allowing you to get sharp pictures at shutter speeds as low as 1/6 sec at 200mm. Although this can't do anything about subject movement, it should greatly
expand the usability of the lens in marginal lighting conditions.

相同於其他Nikon最近的高階鏡頭,AF-S Nikkor 70-200mm f/4G ED VR 也有奈米水晶鍍膜,可以減低耀光與內反射。雖然不像它的f2.8親戚在低光下可以比較有彈性,但新的VR系統Nikon宣稱可以提供最高五級的穩定度,
可能可以讓你在200端使用1/6秒快門時也可以拍下銳利的相片。
雖然這對移動物體提供不了什麼幫助,但應該可以在不良光線下大幅提升此鏡的使用性。

We weren't able to save any images, but from a very quick test Nikon's claims of a 5-stop vibration reduction
don't seem entirely unreasonable. At 200mm, hand-held, we were able to get consistently sharp results from
shutter speeds at least as low as 1/15 sec, which matches the best lenses we've tested in the past.
Impressive stuff, and we can't wait to get a production sample in our offices for full testing.

雖然我們不能存下任何照片,但從一個快速的測試中,Nikon宣稱的5級防震似乎並非全然不合理,
在200端、手持,我們可以在1/15秒這樣低的快門速度中,拍出一致銳利的結果,
如同過去我們曾測試過的最佳鏡頭。
令人驚豔的鏡頭,我們等不及要拿正式量產版來進行全面測試。

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