Sigma 18-50mmf2.8 or Pentax 16-45mm to buy???

Started Feb 4, 2005 | Discussions thread
Rick Ashford Senior Member • Posts: 1,008
Re: Sigma 18-50mmf2.8 or Pentax 16-45mm to buy???

I opted for the Sigma 18-50 f2.8 DC EX over the Pentax 16-45. Primarily, I did so because of what I had read about vignetting and lens shadow issues using the 16-45 with the DS onboard flash. These are non-issues with the Sigma lens. Plus, this Sigma lens received a very favorable rating from tests done by Popular Photogaphy magazine compared to the Pentax 16-45. And I wanted the extra lens speed. And I must admit, I really like being able to zoom the full range of this lens from 18mm to 50mm at f2.8. I'm sure the Pentax 16-45 is an excellent lens. But so is the Sigma 18-50 f2.8. They both have their strong points -- and they both have their weaknesses. I don't think you can go wrong with either one.

CSLee wrote:

i m planing to buy one of these lens but don't know which one is
better in term of performance (focusing
speed/accurate,sharpeness,contrast and etc.).can anyone please help
me ,i m lose ?.

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