[paul_43]

好似唔夠Nikon Sharp.. 不過大左個光圈 加左千幾銀換好似唔係好底咁.. 都係Nikon鏡好D..

[paul_43]

同埋出面話Tamron好Sharp.. 我就覺得一般only...

[chris_kts]

Any brother knows if there is big difference between Tamron A16 and Sigma 17 - 50 ?

[Philippe]

A16的對焦面是弧形而不是平面的,用中央對焦再構圖的方法,特別是大光圈時很容易失焦.這也是我比較不喜歡這支鏡頭的原因,用A16要習慣用中央以外的對焦點.
http://www.photozone.de/8Reviews/lenses/tamron_1750_28/index.htm

[edwinliu]

個人覺得Ａ１６顏色好Ｄ,sharpness就好似差唔多咁,?過緣位就真係差Ｄ.整體上質素好過18-70......

18-70
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<BR>
A16
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<BR>
A16
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<BR>

[paul_43]

唔.. 可能未用慣吧... 唔知A16加Nikon NC Filter好D定係L37C好D呢?? 有無人用緊呢兩隻Filter?? 有乜分別??

[sk0007sk]

Tamron 17-50mm 景深區為曲面
http://www.pbase.com/kocho/image/71249926

Sigma 18-50mm 景深區為平面
http://www.pbase.com/kocho/image/71249925

Sigma 18-50mm MACRO對決Tamron 17-50mm XR Di D-II
http://www.mobile01.com/topicdetail.php?f=248&t=259497&p=7

[Philippe]

d2c兄,我留言既下面個網址講的.

http://www.photozone.de/8Reviews/lenses/tamron_1750_28/index.htm

[chris_kts]

Thanks for the notes and information :)

I am going to buy the lens and will study the articles before the move. Thanks !