Reviews and Problems with Sigma 18-200mm F3.5-6.3 DC
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Sigma 18-200mm F3.5-6.3 DC Lens Review
SLR Lens and Camera Reviews
6 June 2009
Summary: There's nothing special about Sigma 18-200mm f/3.5-6.3 DC lens that would make you love or hate it. It's just an average lens, with an appeal to mainstream consumers looking for a 'walkaround' lens with an extreme focal length coverage.
Conclusion: This lens once again proves that it is extremely difficult to produce the ideal all-in-one lens. Whilst this one is very good at the wide end, it does start to show the limitations of the design type at the long end.
Pros: Performance at wide end, Focal Range, Size and weight, Easy Manual Focus
Cons: Optical quality falls off towards telephoto end, Autofocus a little noisy and slow.
Excerpt: The Superzoom category of interchangeable lenses is becoming one of the most hotly contested areas of technology in the digital age and virtually everyone is trying to get in on the act. The Sigma 18-200mm is the latest to reach the dealers' showcases.
Pros: Good stabilisation system, Good build quality, Decent optical performance for type, Reasonably price
Cons: The negative points are:, Heavier than some, Some CA around the edges at wider apertures, Barrel distortion at the wide end.
Excerpt: Sigma's long-awaited, second Optical Stabilizer (OS) lens ($549, street) is an 11.1X digital-only superzoom with one SLD and three aspheric elements. A 29-320mm equivalent, it follows Sigma's first OS lens, an 80-400mm f/4.5-5.6 ($999, street), by more than four years, and outdoes its predecessor...
Summary: Utazások előtt sokszor kerülhetünk dilemma elé, hogy vajon milyen objektívet vigyünk magunkkal. Néhány fixet a jó képekért? Vagy inkább mindent szeretnénk fotózni és választunk egy alap és egy telezoomot?