Nikon AF-S VR Nikkor 70-200mm 1:2.8G review
Studio Tests - DX format
The AF-S VR 70-200mm F2.8 puts in a highly impressive performance on the DX format, with very little to complain about at all. Performance is truly stunning at 100mm, but weakest at 200mm; however even here it's really very good.
|Sharpness||The lens performs well even wide open, and at optimum apertures (F5.6-F8) is impressively sharp right across the frame at all focal lengths except for 200mm. Diffraction starts to soften the image on stopping down to F11, with F22 for use only when extreme depth of field is essential.|
|Chromatic Aberration||Chromatic aberration is overall very low; a little green/magenta fringing is visible towards the wide end of the zoom range, but it disappears almost completely on zooming to 135mm. At 200mm, there is measurable blue/yellow CA, but this will rarely be visible in actual images.|
|Falloff||We consider falloff to become perceptible when the corner illumination falls to more than 1 stop less than the centre. As might be expected for a full frame lens used on DX, falloff is simply not an issue; there's just a small amount wide open at 200mm, but you're unlikely ever to see it in real photos.|
|Distortion||Distortion levels are overall very low on DX, ranging from modest barrel distortion at 70mm (0.6%), through neutral at about 100mm, to slight pincushion at 200mm (-0.8%). Nothing to worry about at all here.|
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|.....the ROYAL LOTUS 2017/08/25-NEW YORK..... by Chiwat|
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