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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 28 Sep 2010 (Tuesday) 07:48
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STICKY: 7D compatibility with Sigma 70-200 APO DG Macro HSM EX! Re-Chip might be needed.

 
mangkukhayun
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Sep 28, 2010 07:48 |  #1

Good news: I've just upgraded myself from the 350D and battery grip unit to a 7D! :D

Bad news: My lens 70-200 sigma does not work! :cry:

Well, to my disappointment, as mentioned above, my beloved lens doesn't work with the newly acquired 7D. Other lens work just fine.

I wonder if this is the standard issue with this lens-body configuration.. Pretty sad from what I've found here..:cry:


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7D - 350D gripped - 17-55IS - 10-22 - 100L - Nifty-Fifty - 580EX
Sold: Canon 24-105L, Tammy 17-50 non-VC, Sigma 70-200 non-OS
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canons900
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Sep 28, 2010 07:53 |  #2

What is the problem, no focus? Camera does not recognize it? getting some kind of error on the camera?

More specifics please.




  
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Thorrulz
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Sep 28, 2010 07:58 as a reply to  @ canons900's post |  #3

You may need to have the 70-200 re-chipped since Sigma reverse engineers its lenses. If you can take the 70-200 and try it on another 7D you should have your answer.


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Tarzanman
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Sep 28, 2010 07:58 |  #4

I have that lens and body combination. Mine work properly. (except the Sigma does have a habit of occasionally taking bad photos wide open)




  
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mangkukhayun
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Sep 28, 2010 08:05 |  #5

Sorry for not being specific, was quite de-moralised earlier.. actually the problem is that the AF does not work, not auto-focusing at all eventhough the AF has been switched on. In af mode on, picture can only be taken by manual focusing through the focus ring. If the subject is not in focus in, it will not take the picture at all, unless switching to manual focusing mode..

I wonder if reverse engineering by Sigma on previous Canon body AF system has shown its tick on this newly designed 7D AF system..


Sheriff Photo
7D - 350D gripped - 17-55IS - 10-22 - 100L - Nifty-Fifty - 580EX
Sold: Canon 24-105L, Tammy 17-50 non-VC, Sigma 70-200 non-OS
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mangkukhayun
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Sep 28, 2010 08:08 |  #6

Tarzanman wrote in post #10992804 (external link)
I have that lens and body combination. Mine work properly. (except the Sigma does have a habit of occasionally taking bad photos wide open)

which model of the sigma do you have, the older IF HSM (non-macro)? you must be really lucky dude..


Sheriff Photo
7D - 350D gripped - 17-55IS - 10-22 - 100L - Nifty-Fifty - 580EX
Sold: Canon 24-105L, Tammy 17-50 non-VC, Sigma 70-200 non-OS
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Sand0r
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Sep 28, 2010 08:13 |  #7

I bet you're doing something wrong, the lens should work fine.

The focusring is in the correct AF position? You can pull it back and forward.




  
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mangkukhayun
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Sep 28, 2010 08:31 |  #8

Sand0r wrote in post #10992857 (external link)
I bet you're doing something wrong, the lens should work fine.

The focusring is in the correct AF position? You can pull it back and forward.

Yeah, i've done that. Actually I've swapped my setting to 350D-sigma and 7D-tamron, both work fine. Alas when i swap back to 350D-tamron and 7D-sigma, the 7D config doesnt work.

Any idea?


Sheriff Photo
7D - 350D gripped - 17-55IS - 10-22 - 100L - Nifty-Fifty - 580EX
Sold: Canon 24-105L, Tammy 17-50 non-VC, Sigma 70-200 non-OS
flickr (external link)

  
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SMP_Homer
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Sep 28, 2010 08:34 |  #9

contact Sigma, and hope they can work some upgrade magic on your lens - not specific to your lens, but I've heard of times where Sigma can't do an upgrade, and will offer some form of discount on a new lens...


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JackProton
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Sep 28, 2010 13:49 |  #10

See if you 7D's firmware is up to date.




  
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10megapixel
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Sep 28, 2010 13:57 as a reply to  @ JackProton's post |  #11

I had a copy of that lens, and had nothing but trouble with it unfortunately on my XXD bodies. My advice...Sell it and get the Canon 70-200 2.8 :D



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Marloon
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Sep 28, 2010 14:19 |  #12

Lol. It happens. Get it rechipped or sell it and buy a canon.


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Judder ­ Man
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Sep 28, 2010 14:37 |  #13

Just send it back to Sigma for uploading or re-chipping, I had a similar thing with a Sigma 12-24 on the 7D. Usually takes about 10-14 days.


Canon 5D mk3, 50mm 1.4, 17-40L, 70-200L, 100-400L, Canon 100L macro, Canon 2 x G1X, Speedliite 430 EX all supported by Gitzo and Benro.
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canons900
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Sep 28, 2010 15:38 |  #14

Send it in. Get it re-chipped and you'll be good to go. If they can't re-chip, you can always use it on the other body. Or sell it.

Who knows, maybe they'll even offer you some kind of upgrade deal.




  
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phreeky
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Sep 28, 2010 18:07 |  #15

Sigma will surely re-chip for no charge. That lens can still be bought new unless I'm mistaken, so it's not like you're trying to get a really old lens model re-chipped. If they don't do that for you I think you have every right to be pissed off.

Thankfully all my lenses work ok on my 7D, Sigma + Tamron included.




  
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7D compatibility with Sigma 70-200 APO DG Macro HSM EX! Re-Chip might be needed.
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