學人攝影 (6) -- Canon 60D, 50D, 7D, Sony a55 2/2

[tingthian]

actually i got use A550 before the focus is really fast no problem at all night also no problem~

but must use top range lens as sony 70-200mm etc

but... the A550 is the HDR the problem as shoot in what lighting condition and setting the result is also same~

[01NissanSkyline]

ying yang ching chow witda womar komodo amdodbu

[MinG3105]

A55仲輕

[discovery531]

......講 sony 個位人士真係進諧，a550 / a700 既畫質上鬆散既原因係把握唔到其對焦系統上既弱，a550 確實係有對焦弱既問題，但如果有自己研究過 a550 都可以好好對焦而唔會咁易拉風箱。

a33 以上換左另一套 focus system 更快更準。

nex 方面評論仲更加悲哀，簡簡單單去提出一個重點啦。佢係對比性對焦­，但可以做到 aps-c cmos size 得來又可以有夠快既對比式對焦，呢樣野係 canon / nikon 及其他 evil 廠都比較難搞既野。cmos size 越大，對焦範圍越窄，對對焦系統既精準要求越高。對比式對焦係用­電腦去計算出黎，但真係未有一部有大 cmos 得來又用對比式對焦又夠快。

[supraelita]

Advanced Photo System type-C (APS-C)