[E39]

可唔可以詳細解釋何謂 F2.8恒定光圈
我只知即係無論焦距幾多, 光圈值都可以保持F2.8...
咁我用其他機既M mode 都可以set 死 用F2.8 啦...
咁兩者有什麼分別呢?
請指教

[esmondtg]

用m mode可以set死F2.8.............
咁你試下zoom下啦唔該，睇下個光圈值有乜唔同。

[hk9991997]

E39,

Esmond is correct. Normally, zoom len will have two F, Small F value for min. zoom and Large F value for max. zoom. With 恒定光圈 the zoom will not affect the F value.
I'm also using Fz-10, I will keep 光圈 at 4.0 as it can have less noise.