Originally submitted at Adorama
Sigma 100-300mm f/4 EX DG IF AutoFocus Telephoto Zoom Lens for Pentax AF Cameras
Very impresive!
Pros: Durable, Consistent Output, Strong Construction, Sharp Focus
Cons: Slow Focus
Best Uses: Special Effects, Sports/Action, Wildlife, General Use
Describe Yourself: Professional
After working with a cheeper zoom I was getting very frustrated with my images and with available zoom lenses for the Pentax 20D. I am very pleased with this lens! It is very sharp and now I can shoot with confidence my images are going to be of good quality. I also bought the sigma 2x converter and it works amazing too. Now I have a 100-600 quality lens. Nothing much wrong with it.
(legalese)