Originally posted by Reportage 
Did you nit pick on every detail before you decided?
No. Everyone had good things to say about the Tamron, never considered the Sigma (not sure if it was around even), and the Pentax was too expensive and I didn't care about the WR/SDM features to pay the extra money.
Originally posted by lytrytyr To me, the Tamron ring seems to be quite light and short in its throw,
but my manual focus ZKs might be skewing my judgment of that.
It's no MF lens, that is for sure, but you can MF with it.
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