Nikon 18-200mm f/3.5-5.6G IF-ED AF-S VR DX

helius

Power Member
frontpage.jpg


Nikon's 18-200mm superzoom for DX-format DSLRs. The AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF ED, to give it its full title, crams a hefty 11.1x zoom into a package smaller than its name might imply. But does this lens' enviable convenience come at the cost of compromises in its optical performance?
DPReview


cumps
 
bem pelas conclusões da DPReview, a qualidade parece deixar a desejar.. parece que as aberrações e distorções estão bastante presentes, no entanto, e pelo lado positivo, é de realçar a versatilidade, permitindo com apenas uma lente captar um grande número de situações..

fica aqui a conclusão deles:
Conclusion - Pros

  • Huge 11.1x focal length range, ideal travel lens
  • Decent build quality - much better than Nikon's 18-55mm kit lens
  • Very effective vibration reduction system, at least 3 stops benefit
  • Excellent fast, silent autofocus with manual override
  • High image quality in the normal to short telephoto range, and good at 200mm
Conclusion - Cons

  • Pronounced distortion across much of the range
  • Extremely soft at 135mm
  • Rather average close-up performance
  • Zoom creep
Overall conclusion

Just occasionally, the old cliches are still the best, and with the 18-200mm VR the phrase 'jack of all trades, master of none' springs immediately to mind. It's a lens which delivers somewhat flawed results over its entire zoom range; where it's sharp, it has heavy distortion, and when that distortion comes under control at the long end, it loses sharpness. Its close-up performance is reasonable, but not spectacular, and overall it will likely be outperformed optically by a cheaper combination of standard and telephoto zooms. So for a certain type of photographer interested mainly in absolute image quality, this may well cause it to be regarded as nothing more than an expensive snapshot lens.
But to dismiss the 18-200mm VR based purely on its optical quality is to miss the point quite fundamentally. The whole idea of such a lens is to allow the photographer to travel light and never miss a shot while changing lenses, or indeed not to have to risk water or dust entering the camera in adverse conditions. So what you do get for your money is a hugely flexible zoom range which can handle the vast majority of photographic opportunities, coupled with excellent autofocus and vibration reduction systems. And all of this is wrapped up in a relatively compact package, with build quality which feels solid without being excessively heavy. It really is a lens you can leave on your camera all day long and scarcely miss a shot, and it has to be said, this makes it a lot of fun to use.
So when all is said and done, we have to understand that superzooms are essentially about making some optical compromises to provide the broadest possible range in a single lens, and it's up to each individual to decide whether those compromises are acceptable. I wouldn't recommend the 18-200mm to someone whose primary interests were either architecture or wildlife, for example, but for the photographer who wants to shoot a little bit of everything and not have to change lenses, it's more than fit for purpose. Ultimately this is probably as good a superzoom as money can buy, so as long as its limitations are recognised and understood, it has to be recommended.
 
Será uma boa escolha? Ou continará a sofrer os problemas de um bigzoom, distorções e aberrações cromáticas...

Eu não sou grande adepto destes zooms "faz tudo", mas pelo que leio, é uma boa opção para quem realmente gosta de versatilidade, e é também uma boa lente para viagens quando é necessário não levar muito peso.
É claro que não tem a qualidade óptica de outras lentes, mas pelo preço, é uma opção a considerar.
O feedback de quem a usa parece ser bastante positivo, desde que se tenha consciência das suas limitações.
 
Pois, esta tem a vantagem, que tem um "todo o terreno", que para situações de viagens, na qual o peso é essencial ou então em situações na qual não convém mudar de lente (perder o motivo ou então entrar "coisas" para o sensor).

Mesmo assim, há de ser melhor que uma bridge "bigzoom" que existem actualmente no mercado?

Se calhar é uma boa substituta das 18-55 e depois pode-se investir num par de lentes mais a sério para cobrir estas distancias focais. Não me refiro a 18-55 + 55-200 stocks, mas uma sigma ou tammy 17-50 F/2.8 + 70-200 F/4.0 ou mesmo F/2.8 :P
 
Back
Topo