[fredrace]

各位師兄,我正在考慮以下三支鏡頭,
sigma 17-70 f2.8-4.5 macro
sigma 18-50 f2.8
tamron 17-50 f2.8
我比較少開盡光圈,如果不考慮焦距及微距功能,那支鏡影像質素較好

[Saito]

比我會咁選擇：
1, Sigma 18-50 f2.8
2, Tamron 17-50 f2.8

Sigma的解像力唔及Tamron，
但色彩比較濃郁，加上有macro，仲意影下人像可以考慮。
不過亦因此會帶有小小偏黃的感謝。

我朋友入左一支Tamron 17-50 f2.8，
現時都好滿意，不過會出現小小over的問題。
所以用佢的時間要注意下。

[lambertnh]

用 Tamron A16 係要 -EV 的，-0.3 至 0.7 不等，另外 A16 先天色淡，-EV 亦有助提昇 Satuation

[ringomov]

比我會咁選擇

Tamron 17-50 f2.8

雖然我係Sigma Fan 屎.

[fredrace]

多謝各位師兄指教

[CanonA80]

I agree with ringomov's decision, tamron 17-50 f2.8 is a bit better, comparing with the other two lens.

[K_C]

who can you tell me that whether the sigma 18-50 is release a new version which the filter is 72mm with macro function.

Thanks~

[fredrace]

yes, the one in 72mm with macro was released by end of 2006