黑先生 擁有70-300mm的長度 哈哈哈 還有VR 防手震
但是
好像也很缺貨 明天打電話問問
.............................. 我要的都缺貨
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Introduction
The Nikkor AF-S 70-300mm f/4.5-5.6 G IF-ED VR is a long awaited lens by many Nikon users. For a couple of years the community looked with envy towards Canon where even two good quality, slow speed tele zooms are available. Interestingly some product images of the Nikkor leaked into the web about a year ago but it seems as if the lens was either not ready at the time or the immensely popular AF-S 18-200mm VR blocked required resources. Well, speculations - only Nikon knows. Unlike most of the recently introduced Nikkors the AF-S 70-300mm VR is a full format lens but as usual we'll have a look how it performs on a Nikon D200. Within the APS-C DSLR scope its field-of-view is equivalent to 105-450mm.
By today´s standards in this class the lens is comparatively large and heavy. However, the build quality of the lens is also pretty decent without reaching pro grade Nikkors here. The outer construction is made of good quality plastics and a metal mount. As already reported by other users the inner lens tube is marginally loose but this is not unusual for a lens which extends significantly during zooming. Both the broad, rubberized zoom ring as well as the small focus ring operate smooth and even without being damped. The lens doesn't suffer from zoom creeping - at least not straight out-of-the-box. The Nikkor AF-S 70-300mm VR is a G-type lens so unlike its predecessors it does not offer an aperture ring anymore. A lens hood as well as a soft lens case are also part of the package
The AF-S 70-300mm VR is the first high-speed Nikkor tele-zoom with a VR II (Vibration Reduction) offering an efficiency equivalent to 4 f-stops. The lens offers two VR modes - a "normal" mode for most situations inc. static scenes, object tracking as well as monopod shots whereas the 2nd "active" mode to compensate more pronounced vibrations (e.g. when shooting from a moving vehicle).
Thanks to an AF-S drive (Silent Wave Motor) the AF operations are nearly silent and quite fast. The front element does not rotate so using a polarizer remains easily possible.
Distortions
Despite its fairly ambitious 4.3x zoom ratio the lens exhibits only slight barrel distortions at 70mm and slight pincushion distortions towards the long end of the zoom range.
MTF (resolution)
The tested sample produced very decent resolution figures under lab conditions. At 70mm the performance is excellent scratching the resolution limits of the D200 sensor. The drop in quality is only marginal towards the borders of the image frame. Typical for most tele zoom lenses there's a decrease in performance towards the long end of the zoom range. At 200mm the results remain on a very high level whereas at 300mm there´s a significant drop of the border performance. Stopping down helps to lift the quality of a very good figures by f/11. At wide-open aperture the contrast level seems to suffer a bit as well. The field curvature as well as residual spherical aberrations (focus shift when stopping down) are well controlled.
Below is a simplified summary of the formal findings. The chart shows in line widths per picture height (LW/PH) which can be taken as a quantity for sharpness. The chart is limited to the visually relevant LW/PH range of [750, 2250]. If you want to know more about the MTF50 figures you may check out the corresponding Imatest Explanations.
Verdict
The Nikkor AF-S 70-300mm f/4.5-5.6G IF-ED VR may not be the Über-lens everybody was hoping for (nor was that realistic) but it is still a very good lens. At 70mm the results are nothing short of stellar and still easily on a very good level at 200mm. At 300mm there´s a performance penalty specifically at the image borders @ f/5.6. Stopping down to f/8 helps to overcome most of the problems but unfortunately there´s also a quite pronounced but still correctable degree of yellow/blue (lateral) CA. Distortions and vignetting are basically non-issues throughout the range. The build quality is pretty decent and about in line this Nikon's recent medium grade zoom lenses. The AF is quite fast and almost silent and unlike most lenses in this league the front-element does not rotate during focusing nor zooming. The pricing of the lens may be relatively steep in absolute terms but price/performance-wise it remains a harmonious package.
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