Originally posted by Aslyfox just curious
you would take the third party lenses - Tamron and Sigma - over the non WR 100 macro???
I've used neither the Tamron nor the Sigma, but it's not a trade I would make. Part of the DFA100mm's charm is its size and weight, both the WR and the non-WR versions share this. Optically I'm sure I'd be happy with the Tamron or Sigma, but the DFA100mm's are just so cute and nice to hold. Money could be a factor, I decided to pay the premium at the time for the Pentax, and I've no regrets.
About the only thing I'd trade my non-WR DFA100mm for would be the WR version, and this would only be after getting my grubby hands on a DFA50mm macro. I do use the aperture ring on my DFA100mm on tubes and bellows, but the 50mm would be better suited for this so I'd be willing to make the trade on the 100mm front for the weather sealing and nicer feeling build.