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| sent on 16 Agosto 2018
Pros: size/weight, cost of used goods, yield at medium distances
Cons: rendered at the edges to infinity, better not to go beyond the DX format
Opinion: It is a lens that is worth knowing and keeping in the kit given the merits and the very affordable price. In total I have tried three, currently I have the AF-D version. I was looking for a travel and compact lens that was also autofocus, the first 70-210 I took used was not bad even using it on the D800; but part of the optical group was disaxed and one side of the frame was always out of focus (the side changed between infinity and medium distances). I resold it, found another one, much more kneaded at 210, which I then did not buy. I then found a third specimen, of the latest version produced: AF-D, optically identical to the AF version but with a more efficient and fast focus system and has a more advanced anti-glare treatment (SIC). It is a robust lens, with a good color rendering. On infinity at f8, it shows a good sharpness in the center that drops noticeably on the edges (D800) until it becomes totally kneaded at the corners; at medium distances, on the other hand, the optics change pace and show a more homogeneous yield accompanied by better sharpness and good contrast even near the maximum opening. I consider it a recommendable lens for anyone: both to expand the basic kit as well as for those looking for a compact lens to take anywhere or to take 'candid' images without giving in the eye, because it is small and does not alarm the subject who, instead, with other lenses you would see real cannons pointing at him that, moreover, would also attract too much attention to the photographer. It is by no means comparable to the AFS 85 f1.8 or the AFS 80-200 f2.8 the sharpness is much lower and even the blurry (bokeh) suffers from the 7-slat diaphragm that returns fairly annoying polygons on the points of light in the background. Compared to the current optics, it is undoubtedly a choice of folding and also obsolete, but the small size and the overall satisfactory yield in the center, make it a tool that pays off with versatility, manoeuvrability, weight and small size, the optical deficiencies that are ultimately more than acceptable, unless you shoot on FF at 36-45 mpix and for each image you go to look for the hair in the egg of sharpness rather than the substance and message of the image itself. It must be said that if used on APS-C many of the obvious defects on FF (at the edges) practically disappear because it works only in the center, where the quality is always reasonably good. A recommendation: this is an approach that - at the very least - has been around for at least 20 years (the AF version was produced from 1988 to 1993, the AFD from 1993 to 1999), and although constructively it is done very well, it is important to try the lens thoroughly before consolidating the purchase because my experience shows that it is very easy for one of the optical groups to be disased. This is Ken Rockwell's review: https://kenrockwell.com/nikon/7021056.htm, and here you're going to find some history: http://www.mir.com.my/rb/photography/companies/nikon/nikkoresources/AFNikkor/AF70210mm/index2.htm |
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