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

Started Feb 4, 2005 | Discussions thread
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CSLee Regular Member • Posts: 381
Sigma 18-50mmf2.8 or Pentax 16-45mm to buy???

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 ?.

 CSLee's gear list:CSLee's gear list
Canon PowerShot 350 Panasonic Lumix DMC-FZ1 Nikon D800E Nikon AF-S Nikkor 24-70mm f/2.8G ED Nikon AF-S Nikkor 50mm f/1.4G +3 more
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