Sigma 28-200mm f/3.5-5.6 Aspherical IF Macro communication problems

Started Jan 21, 2013 | Questions thread
BLThomas
New MemberPosts: 5
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Re: how old is the lens? Is it a DL or DG series?
In reply to Lemming51, Jan 22, 2013

Lemming51 wrote:

BLThomas wrote:

I have a Sigma 28-200mm f/3.5-5.6 Aspherical IF Macro lens and a Canon EOS T3. Intermitently I will have communication issues with this lens and it says to clean the contacts. Anyone else have any experience with this lens body combination?

If it is a lens made prior to 2002 (DL series) then it is incompatible with EOS cameras introduced since then. See http://photonotes.org/articles/beginner-faq/lenses.html#compatibilitythirdparty , the section "Are there compatibility problems with any EF lenses made by third party manufacturers?" Sigma did a poor job backward engineering the EOS lens communications. Contact Sigma Customer Service and they may be able to update your lens.

If it is a recent version ("DG" series), then it should be compatible, so there may be a connection issue (poor contact in the mount, faulty flex-cable in the lens, ....).

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Unapologetic Canon Apologist

It's a DL series, I'll try Sigma and see what they say.

Thanks

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