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Sigma EOS AF replacement chip
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PostPosted: Thu Oct 27, 2016 7:50 pm    Post subject: Sigma EOS AF replacement chip Reply with quote

Folks,

Sharing this as I just bought one for my Sigma 400mm f5.6 HSM macro Wink

Garry Niedzielski
https://sites.google.com/site/diyrechip/

Hopefully it is useful for somebody here.