[bryantyan]

請問各師兄
小弟想買支二手EF 24-70L,聽人講有走焦同後移問題?
請問有無師兄知係邊個年份同型號(CODE)..........
迷失的小師弟.............

[JSmith]

想買就買，唔好聽咁多「聽人講」....
好多CHing話好正，你又聽唔聽倒？

[larrykyj]

小弟剛買了此鏡(新鏡)配我的30d，發覺真的有走焦情況，之後連機拿到cs fine tune後，對焦已經沒問題了。不知道是機還是鏡問題，因為裝在朋友的1d mark 2上走焦明顯減少! 難道多sensor對於對焦有很大影響。請各位大大指教。

[fsyten]

請問拎支鏡上cs tune，係咁一定要帶埋body去架﹖

[bryantyan]

知道JSmith 師兄....

[JSmith]

不過你想買二手，就要小心check 清楚
呢支通常都會變成kit lens，好多Ching都唔會放出去。我有一支，只會長接body。

[gwu1]

請問係咪有分第一代同第二代？

[JSmith]

冇
真係舊一代就係28-70

[cy001]

this len s really very good. this lens have a f2.8, therefore many c - hing said lose focus but less c - hing talk about 24-105 f4.0. this is the reasons of f2.8 vs f4.0. understand? i can say every lens in difference body, it maybe have some little lose focus. if u are care this little bit our focus, i think u purchase 50d or 1ds m3 or 1d m3. they can memory each lens detail on your body and adj the focus length by yourself.

[eeccyykk]

Any ching know the 17-40 f4L also have 走焦情況? thanks thanks

[cy001]

你要在大光圈,淺景深才明顯,那些f4光圈,或者kit len都沒有大光圈,走焦都唔明顯,咪少啲人說,如果怕走焦,都是買有自己fine tune 焦點的机身比較好.因為有時支鏡在我部唔走焦,你部用又差少許,又拿上cs tune, 好煩,全用f8去映,支支都晤走焦.

[ken仔88]

好彩我支冇^^

[hanny]

because of big aperture and enviroment light

if in a very bright enviroment aways no problem

[kingking0406]

can 40D can be fine tune inside the body

[cy001]

no, this function is only at 50d, 5d mark 2, 1d, 1ds