[edwin_0]

我想問.. 我用 28mm 同用52mm gei Tele 時出來 gei 相光度有冇大分別??

因為physcially mm 大?入光mei多D lor ... ??

同my 如用大口徑我mei可以Zoom 近來來做大光圈lor

係mei ga???

thanks

[edwin_0]

anyone can teach me ar???

coz i'm using 28mm TC-E2 .. and wanna buy a larger thread size e.g. 56 mm Tele if the brightness will be better...

pls. advise me la.. thanks alot