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Sigma 100-300mm f4 EX IF HSM APO

Review Date: Jan 5, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 10 

Pros: Very sharp, warm color, good contrast, easy to hold, well balanced and good mechanics. The best performance to price ratio that you can get for this zoom range.
Expensive filter but I can not fault the 82mm size filter, it is f4.0 at 100-300mm.

I like this lens for it's sharpness when used above f4.0 from 100 to about 250mm. I have noticed that the sharpness degrades at around 300mm but I think it is still sharper than other zoom lens in this range. I tried also using this lens with a Sigma 1.4X teleconverter and I did not experience any problems on focusing and the images are still acceptable. I think this lens is the sharpest zoom lens that Sigma has made.