[anni]

不知道点解,我的Sigma 17-70mm F2.8-4.5 DC 镜头,在同一焦距,同一景物,同一光圈和快门下,都比我另一支 Sigma 17-50mm F2.8反而还清晰!! Sigma 17-50mm F2.8好明显蒙D,放大同一地方比较就更明显,请问C兄是甚么原因呢?

[QQboy]

早版既 Sigma 17-50mm f2,8 全開光圈就散散地, 而新版 marco 就唔知

[barryspc]

我試過17-50 2.8 macro 全開 50mm 時比 17-70 的 50mm sharp

[anni]

我的17-50 2.8 macro 全開 18mm 比17-70 的17mm 差好多

[Winsome993]

I am using 17-70 the more I use It the more I am amuse by the lense. It is so good sharpness is comparable to anything in the market, with this sometime i feel which do u need expensive lense? including L lense. It compare nicely with my others like small small white and the picture quality is just beautiful. the 17-50 has 2.8 but doesnt mean it can beat the 17-70. just my 3 cents.