[cacalvin]

請問各位Ching本人用450d想買支天涯鏡有咩好呀?謝謝!!!

[Obi-Wan]

all these 天涯鏡 are not very good in quality, but can still be used to give ok quality if not enlarged above 8R etc.
I've used 18-200 Sigma, Tamron 18-200, CANON 18-200 IS
the picture quality is for Sigma and Tamron are more or less the same. Canon is a little bit better, but not worth $5k

As a beginner, u may consider buying a 2nd hand sigma or tamron (1.5k)