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

Started 3 months ago | Discussions thread
Massao Senior Member • Posts: 2,580

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.

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Kind regards,
First camera: Canon FTB; First autofocus SLR camera: Pentax; First Nikon: F601 (N6006); First digital camera: Sony DSC-W5; First DSLR: Nikon D70; First mirrorless ICL camera: Samsung nx11

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