superzoom lencset szeretnek, ha valakinek van ezekrol szemelyes tapasztalata, orulnek ha megosztana
Tamron AF 18-270mm f/3.5-6.3 Di II VC LD Aspherical (IF) MACRO VS
Sigma 18-250mm f/3.5-6.3 DC OS HSM"Many potential buyers will of course be interested in how the Sigma compares to its most obvious direct rival, the Tamron 18-270mm F3.5-6.3 Di-II VC. As usual, the answer to this question is not entirely simple, with the two lenses having a different array of strengths and weaknesses. In a fashion that's almost stereotypical between the two brands, the Tamron certainly appears to be consistently sharper, and has a rather more effective stabilisation system. The Sigma, in contrast, has arguably a more balanced overall design approach; alongside its low distortion, the autofocus is far faster and quieter, and the build quality and ergonomics are better too.
Ultimately, with superzooms, the choice comes down to a game of 'pick your favorite compromise', as there's inevitably a penalty to be paid for the undeniable convenience of carrying around such a large zoom range in a single lens. If you tend to share your pictures by posting downsized versions to photo-sharing websites, or making small prints to show around friends and family, the 18-250mm's relative lack of sharpness won't be much of a problem, and its low distortion will be a positive virtue. Likewise if you're after an all-in-one travel lens, and want to be able to grab quick snaps of friends or children, that HSM autofocus system may well prove to be beneficial. As always, the choice is yours."