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Forum: Pentax K-5 & K-5 II
09-28-2012, 01:02 AM
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Thanks Vylen, I'd be interested to know just how much better the IQ of the Sigma lens is when compared to the 18-135mm...
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Forum: Pentax K-5 & K-5 II
09-27-2012, 11:38 AM
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I think it'll depend on the situation. If I want to go walking in the Welsh hills for a day and think I might take a few pics along the way, the 18-135mm will probably remain the perfect partner. But if I go on a journalistic assignment somewhere (I'm a writer), and am required to bring back good enough pics for publication, from situations where the light might be v. low (concerts, indoor meetings etc) them the Sigma 17-50mm sounds like it would be ideal. Feels like I might have to get both...
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Pentax K5 + Pentax 18-135mm / Pentax DA 35mm f2.8 / Takumar 50mm f1.4 / Takumar 28mm f3.5 / CZJ 135mm f3.5
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Forum: Pentax K-5 & K-5 II
09-27-2012, 06:14 AM
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Sorry if this subject has been covered already, but I'm trying to find photo comparisons between the Pentax 18-135mm and the Sigma 17-50mm, and advice from anyone who has experience of both.
I've owned the 18-135mm for a while now and I'm pretty happy with it. However, there have been times when I've felt that it's IQ has been a bit of a letdown. I've read plenty of comparisons between the Pentax 16-50mm, the Tamron 17-50mm and the Sigma 17-50mm, (and between all of those and the various 17-70mm options) with the Sigma 17-50mm often winning the votes for overall build quality and IQ etc vs price.
But I haven't read any good conclusive comparisons between the Sigma 17-50mm and the Pentax 18-135mm. If the Sigma's IQ is consistently and clearly better than the Pentax, I'll contemplated swapping. If it's only marginally better, I'll stick with what I've got.
Any thoughts welcome....
Thanks, Andy (Bristol, UK)
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Pentax K5 + Pentax 18-135mm / Pentax DA 35mm f2.8 / Takumar 50mm f1.4 / Takumar 28mm f3.5 / CZJ 135mm f3.5
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