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a question?

Quote:Fair enough. I tend to coddle my lenses anyway, so perhaps wouldn't be as bothered by slightly lesser build quality.
My comment wasn't in reply to yours but just a general observation really.
I completely agree with you, if you look after your equipment the build quality is of minor importance.
I had the Tamron 90mm macro myself for 7 or 8 years and found it outstanding.
The only thing I would say regarding the difference between the Canon and Tamron's build quality is the Canon feels just that little bit smoother in use, if that makes sense. That's not to undermine the Tamron of course, which is superb and very good value for money, considering it's reasonible price tag.

I agree with the last comment. I used an old Tamron 90mm macro for many years (on both film & digital). Results were excellent and never any issues regarding build quality. I only disposed of it and replaced it with a marque lens (Sony) relatively recently because I had extra funds available. The Tamron provides excellent value for money.

Quote:There's virtually nothing between them with regards image quality.
The Canon has the slightly better build quality out of the three.
Agreed, also from reading others experiences and comparisons I think the Canon also has the faster AF. Though for pure macro work this is not a concern it is something to bare in mind when considering the lenses use outside of macro work.