[Nonmem]

Are there compatibility problems with any EF lenses made by third party manufacturers?

Sometimes. Unfortunately certain third-party lenses not built by Canon, notably many older Sigma lenses, will not work correctly on some newer EOS camera bodies like the Elan 7/EOS 30/33 and the digital EOS 10D. The most common symptom is the mirror flipping up and then the camera freezing when you try to take a photo. You then have to switch the camera off to unlock it. The only solution to this problem is to see if Sigma will upgrade the lens for you. If they still have inventory of the control chip they apparently will happily do so for free.

The only third-party maker of EF-compatible lenses with no major compatibility problems so far is Tamron. Some people have suggested that this is because Tamron have licensed official lens protocol data from Canon, but Canon USA’s Chuck Westfall has stated repeatedly in public fora that Canon have never licensed their lens mount protocol to any other manufacturer. So Tamron have either been very lucky or very clever in their reverse-engineering of the Canon lens system. They seem to be a reasonably safe bet right now for compatibility, given their track record, but it’s impossible to predict future developments in this regard.

The following Sigma lenses require upgrading for compatibility with newer EOS cameras, according to Sigma:

24-70mm 3.5-5.6 aspherical UC
28-80mm 3.5-5.6 mini zoom macro aspherical
28-80mm 3.5-5.6 mini zoom macro aspherical HF
28-80mm 3.5-5.6 mini zoom macro II aspherical
28-105mm 2.8-4 aspherical
28-105mm 3.8-5.6 UC-III aspherical IF
28-135mm 3.8-5.6 aspherical IF macro
28-200mm 3.5-5.6 DL aspherical IF hyperzoom macro
28-300mm 3.5-6.3 DL aspherical IF hyperzoom
70-210mm 4-5.6 UC-II
70-300mm 4-5.6 APO macro super
70-300mm 4-5.6 DL macro super
100-300mm 4.5-6.7 DL
135-400mm 4.5-5.6 APO aspherical RF
170-500mm 5-6.3 APO aspherical RF
8mm 4 EX circular fisheye
15mm 2.8 EX diagonal fisheye
24mm 2.8
28mm 1.8 II aspherical
50mm 2.8 EX macro
105mm 2.8 EX macro
300mm 4 APO tele macro
400mm 5.6 APO tele macro
500mm 4.5 APO
500mm 7.2 APO
800mm 5.6 APO
28-70mm 2.8-4 UC
28-105mm 4-5.6 UC
28-105mm 4-5.6 UC-II
70-210mm 3.5-4.5 APO macro
28-200mm 3.8-5.6 aspherical UC

[會飛的胖子]

靠，偶的70-300系佳能的頭

SIgma那個是28-105地

[walleye]

打倒Nonmem！

[Nonmem]

牆眼大師為嘛要打倒俺？莫非也有Sigma的頭爛在手上鳥？

一石二鳥啊！　

[阿龍]

Nonmem好象很注意器材, 有時間也應該多拍些片片啊?

[Nonmem]

阿龍同學，俺是想拍片子啊，可是俺的相機送修N久了還沒有修好，俺經常性地在腦海裡捏影，同時上網虛擬購物，腦海裡全是Matrix那種場景：相機，很多很多的相機。然後兩邊嘩嘩的列出幾萬台隨手拿一個都是1Ds MK II+70-200/2.8L IS，然後俺胸口掛三個腰裡還別一台Casio Exilim 770，大搖大擺過安全門，警衛目瞪口呆看著俺的裝備曰：holy shit. 然後俺拔出相機瞄准……

然後奏醒了——眼淚嘩嘩的。

現在你說，對俺有沒有那麼一點兒的同情？！！！

[麥子谷子]

原來還有一部血淚史好寫啊。。。

[Nonmem]

麥子同學：就是血淚史。你這樣一位充滿同情心的同學肯定已經決定把你的20D給俺送過來了對吧？

[walleye]

俺米有Sigma，俺全是C頭。只不過這兩天幫朋友測試一個Sigma 28-70F2.8的頭。另外非胖是個敦厚的人，看被你這折磨的。

[Nonmem]

walleye 寫道:

另外非胖是個敦厚的人，看被你這折磨的。

牆眼大師罵淫真是狠呀