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07-05-2012, 12:48 PM   #16
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QuoteOriginally posted by seventysixersfan Quote
Here are previous threads from people who wanted to choose from Sigma 70-300 or a DA 55-300; the consensus seems to be that the pentax is better optically than the Sigma although Sigma is cheaper.

Everyone says the Sigma 70 macro is excellent and has an advantage over the DA 70 in that it has such a short focusing distance. But it's a much larger/heavier lens than the DA 70. Do you enjoy the compactness of the DA 70?

But, you could just get the Sigma 70macro and that would fit the FOV position currently filled by your DA 70 plus add the macro capability.

The D FA 100 WR is a nice match for your K-5 if/when the weather gets rainy... The D FA 100WR is also lighter and more compact than the Sigma 105.
Can't tell with several of those threads which version of the 70-300 the posters are referring to, there are several. The consensus appears to be that the newer optical formula for the Sigma 70-300mm F4-5.6 DG OS is superior.

07-05-2012, 12:53 PM   #17
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oh i didn't know there were different models of Sigma's 70-300 zoom. OK, in that case, you might want to go with the Sigma... OR keep the 18-250 and sell your DA 18-135. you'd lose the WR though...
07-05-2012, 01:59 PM   #18

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With regards to the Sigma 105mm macro, I'd go for it if you are interested in a longer lens that is also very sharp. It's a killer lens that isn't just meant for awesome macros, but also brutally sharp portraits too. I got mine for $330 a few months ago, the older film one, and it's one lens that I will not sell. I upgraded from a 90mm MF Sigma that did 1:2 sans adapter and the extra length makes it very easy to work with when doing macros. Beware that for portraits it is a beast, as if your subject wants a dreamy look, it may happen, but you'll get a lot of sharpness wide open. The 77LTD and the Sigma 105 are my go-to head and shoulder/headshot lenses. Check my Flickr link to see numerous examples of this fantastic lens, shot wide open and closed down (for macros).
07-05-2012, 11:29 PM   #19
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Just to complicate matters further; for macro there's also the highly regarded Tamron 90mm. Cheaper than the DFA 100 and supposedly as good (although without quick-shift and wr).

(Edit: typos)


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