Автор: gmg571208
Дата: 16-09-09 23:53
Аз съм имал и двата. Действително 18-200 е по-остър и някак си по-стабилен изглежда. Зависи за какво ще го ползваш - до 70 мм 18-250 е малко по-добър, но след това 18-200 го превъзхожда. Най добре е да се пробва. Два еднакви обектива няма.Ето заключението на специалистите:
Conclusion
The Sony 18-250mm shows its best performance when set to between 18-70mm; after that, issues with sharpness and chromatic aberration make it just a bit less useful. As far as vacation lenses go, if you find yourself shooting more at the telephoto end than the wide end, you're better served by the Sony 18-200mm if you're brand-loyal, or the Sigma 18-200mm if you're not, as these lenses are significantly sharper at 200mm.
The choice between the Sony and Tamron version of the lens I think comes down to sample quality, and what kind of deal you can get. Though if you're an A700 owner, the feeling is that the Sony version of the lens focuses significantly faster on that body, which could be an important deciding point for some. On its own merits, the Sony 18-250mm represents a good demonstration of managing design concessions. It's a compact lens that offers a very useful range of focal lengths, and while it can't hope to be as sharp as more dedicated lenses, it's the lens that will go everywhere, and will provide acceptable performance.
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