[問題] P 20mm F1.7 VS S 19mm F2.8
剛入手一台EP5想要挑顆隨身當機身蓋的定焦
20mm 1.7 是這兩天找得有點灰心
想請問一下這兩顆在對焦速度上會差很多嘛?
Sigma這顆感覺很偏門 網路上資訊不多ˊˋ
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