[GBAmon]

我用開sigma 20.8, 影合照光圈要收至8.0以上,否則有人蒙,室內要閃.
綢上看過鏡頭持性....
http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=480&Camera=453&Sample=0&FLI=0&API=0&LensComp=375&CameraComp=9&SampleComp=0&FLIComp=0&APIComp=5

Canon EF 24mm f/1.4 L II USM 是否可以做到以大光圈影合照而兩排人清?

Thanks.

[william_lau]

咦，你20mm景深咪仲深過24mm？ 除非你同第一排人好近加大光圈，否則景深都應該幾深下個喎。

[GBAmon]

就比喻前三人,後兩人.半身.
唔閃得,只可用到1.8才能正確捕光的話,有可能嗎?

[petercyc]

You're right! According to the test, the quality at the conner similar to 24mm at f/1.4 if you reduce 20mm up to f/8. They are different grade. Change la!

[GBAmon]

應該要keep住20.8,因為在2.8時的散景比較....

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=480&Camera=453&Sample=0&FLIComp=0&APIComp=2&LensComp=375&CameraComp=9&SampleComp=0&FLI=0&API=4

[petercyc]

20.8連中間都開始散.....或者咁都啱, 一齊散冇咁礙眼!