Hi fellow Canon Eos M users, I have a question for you. I just bought a Canon Eos M. I'm willing to fit other lenses - I'm thinking about a zoom. My question is which lens do you recommend that can AF at a reasonable speed? even adapted ones. I was thinking about the 18-135 is usm but then read that ther is the new STM version that is faster on the Eos M, is this true. I can also think about the Tamron 18-200 for Eos M that has some good reviews. My main shots with this little piece of kit will be mainly static objects and travel photography. Thanks.