[jacmissu]

用緊支 sigma 50mm 1.4 ex
好似覺得佢走焦...即係行近小小影..就對唔到焦....這算是走焦嘛 ??

我向 cam2 買這水貨..有d擔心佢唔幫我整tim

不過有一年保...係佢地公司保 wor...

[petercyc]

對唔到焦唔係走焦. 走焦係講對焦點前移或後移左.

每支鏡都有最近對焦距離

支鏡最近對焦距離係45cm

另外物件contract細或環境唔夠光係比較難對焦

[jsklee]

contract? do you mean contrast?

[reflexboy]

貼切d講就係相機o係拍攝前一刻, 焦距突然離開已經對焦o既主體. canon機呢期o係呢個問題上比較出名! 得別o係1d mk3上!

[jsklee]

Film cameras also have this problem, but you don't usually realize it.

[petercyc]

yes, typing mistake.

[william_lau]

呢支唔係微距，sigma 50mm F1.4 最近對焦係45cm，即係主體近過45cm你對唔到焦係正常。