[ricky23cheng]

All C Hing, why I can only have maximum f3 by using the said lens when I put it on my D80, instead of f2.8? Thx.

[王迦南]

請恕愚昩，我祇知有24mm F1.8，不知道有24mm f2.8。


同時微距拍攝時會失光，最大光圈值不是恒定的。

[ricky23cheng]

Thx, C hing but what I'm using is 24mm f2.8. Pls click the following link for details:
http://cgi.ebay.com/Sigma-AF-Super-Wide-II-24mm-F2-8-Macro-Pentax-K-Mount_W0QQitemZ110241789783QQihZ001QQcategoryZ48558QQcmdZViewItem
The problem happened when I just put the lens and turn on the camera, but not just happened at the time of 微距拍攝 .

[王迦南]

我找到了。她是一支比較舊的AF鏡，產自AF/MF交替年代。


我完全未接觸過此鏡，幫不到你忙了，抱歉！