The Tamron 18-200mm-f35-63-di-iii-vc EF-M lens does not work properly on the new EOS M3, even if there are no problems on the M. Tamron is currently investigating the problem.
From there website:
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A notice to users and potential purchasers of the 18-200mm F/3.5-6.3 Di III VC (Model B011) for Canon (EOS M)
Thank you for your interest in Tamron’s lenses.
We have learned that the Tamron 18-200mm F/3.5-6.3 Di III VC (Model B011) for Canon (EOS M) does not function properly when used with the Canon EOS M3, which went on sale in Japan on March 26.
We sincerely apologize to all users and potential purchasers for any inconvenience the issue may cause.
An investigation is currently underway, and as soon as we know more we will post a notice on the Tamron website.
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I hope they find a solution, I really like the EOS M line, especially the M3 and also like this Tamron lens.
From there website:
------------------
A notice to users and potential purchasers of the 18-200mm F/3.5-6.3 Di III VC (Model B011) for Canon (EOS M)
Thank you for your interest in Tamron’s lenses.
We have learned that the Tamron 18-200mm F/3.5-6.3 Di III VC (Model B011) for Canon (EOS M) does not function properly when used with the Canon EOS M3, which went on sale in Japan on March 26.
We sincerely apologize to all users and potential purchasers for any inconvenience the issue may cause.
An investigation is currently underway, and as soon as we know more we will post a notice on the Tamron website.
------------------
I hope they find a solution, I really like the EOS M line, especially the M3 and also like this Tamron lens.