17-70mm lens (Pentax or Tamron advice please)

Started 4 months ago | Discussions thread
TheLastMan Regular Member • Posts: 425
Re: Sigma!

Massao wrote:

Stephen_H wrote:

Hi all

I'm looking at replacing my 18-55 kit lens on my K-50. This 17-70 looks like the perfect replacement, and the reviews on both are favorable.

What are your opinions on the two?

Native or third party? Which is sharpest? Which focusses better? Which just feels better and gives that warm glow inside?

I've compared both the Pentax 17-70mm f/4 and Sigma 17-70mm f/2.8-4.5. Pentax is an absolute junk compared to Sigma's iteration.

Better still, the Sigma 17-50mm f2.8, super sharp - much better quality than either the Pentax or Tamron.  Cheaper than the 17-70 and probably better too, if you can manage without the extra 20mm of reach

 TheLastMan's gear list:TheLastMan's gear list
Pentax K-5 Pentax smc DA 55-300mm F4.0-5.8 ED Pentax smc D-FA 100mm F2.8 Macro WR Pentax smc DA 35mm F2.8 Macro Limited Tamron AF 28-75mm F/2.8 XR Di LD Aspherical (IF) +4 more
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