vchenkoshe wrote:
其實光圈小於F/5....(恕刪)
官網資料似乎不是如此, 下面是D7100的對焦點(嚴格說應是精準對焦的點):
此外, 我本文中提到的英文網站中有段文字不知道能否解釋你的多點對焦現象:
Note that these thresholds are not absolute - a lens with a narrower aperture than the threshold might still work, but at reduced effectiveness, accuracy, and speed. Thus, Canon limits the functionality to the rated aperture for a given AF sensor. (對焦點運作時不是只有啟動/不啟動兩種結果, 而是如同光譜一樣, 對焦準確性從1%到100%分佈, 而您的現象可能是在這兩者之間)
