[haukwun]

小弟今日o係成成入o左支龍仔A16( canon mount).
試鏡時都覺得對焦OK 快，比400D 支kid lens 好。

但當到花展影相時，當嘗試對焦時，發現沒有反應，
可能是set 了MF，但看一看支鏡，是set 了AF 的。
拍多次去AF，再半按快門時，依舊沒反應。
但扭一扭變焦環，再半按快門，有反應了，可以對焦。
這情況不時出現... ...

回家心思思，再試支鏡對焦，發現有不能對焦/半按快門時沒有對焦、沒有反應o既情況出現，
而且機率相當高。

我發覺當對焦在無限遠/接近無限遠，或是在最近對焦距離時(0.27m)，
便會出現對焦沒反應。
例如當對焦環在無限遠時，我嘗試對焦在比較近o既物件時，
or 當對焦環在最近對焦距離時, 我嘗試對焦無限遠o既景物，
也常常出現不能對焦/沒有反應o既問題。

現在很擔心，請問支鏡是否有問題?
另各位師兄，你o既A16對焦表現又如何?
有否像我這樣o既情況出現???

[fokkp]

?然是這樣，今日才買，不如?返去成成換過支 lor，換之前再Check過wor。

[fokkp]

?然是這樣，今日才買，不如?返去成成換過支 lor，換之前再Check過wor。

[fokkp]

?然是這樣，今日才買，不如?返去成成換過支 lor，換之前再Check過
若 交


wor。

[victorsupra]

I came across this problem with my new A16 but I have tried my kit lens of canon, it also has such problem espcially for close up. I think it's normal case for cheap lens.

[haukwun]

嗯,
但那支A16, AF 真的很怪。

例如，當我成功對焦無限遠後，
再對近一點o既目標時(距離我約有一米)，佢會沒有反應，
對焦馬達沒有轉動過，在VF 睇係係矇查查o既，
接著再對任何遠近o既目標，也是沒有反應... ...

又或者，先對著比較近o既景物，
明明在鏡頭對焦範圍內，
但徧徧轉極都對唔到，
當嘗試對焦對唔到後，
再半按快門對其他目標，無論遠近，都冇反應，
對焦馬達轉都冇轉... ...
唔係對唔到焦，而係根本就冇對焦,馬達都冇轉!!!

這情況，在17mm wide 時, 最嚴重!

請問victorsupra師兄，你那支A16也是這樣嗎 ???

[fokkp]

咁咪大鍋！我想買Wor。

[Fishermanhk]

This may be not the problem of your A16, but is the problem of your 400D.

My 400D had appear this problem 2 weeks ago, referring this problem, I had tried some other lens, finally I classify this problem is caused by 400D.

I had send to CS and awaiting for feedback.

[willie_wong1]

我用350D 及 Tamron A16 沒有問題, 可能 FishermanHK 說法是對.
Go to CS to check

[crazybean]

I am also using A16 with 350D and have no such problem.

[victorsupra]

My A16 did not have this problem, it would only stop focus once focusing for very close up object but you turn the zoom a little bit, it would be O.K., I am using 350D so it might be the problem of your camera.

I would suggest you bring it to the dealer and try another camera, if the problem still occurs, it must be error of your lens rather than the camera.

[haukwun]

謝謝各師兄.

我去o左成成換鏡,
body 冇問題. 係支鏡對焦出問題,

一試支新鏡，爽呀.
對焦感覺真係差天拱地.

[mk07]

haukwun
咁米好ｌａｗ，ｏｋ　ｌａｗ！

[fokkp]

信用幾好丫，唔妥有得換，

請問樓主買?幾錢呀？因我都想買呀。

[haukwun]

嗯,
$2780.