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09-19-2008, 11:53 PM   #1
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Join Date: Dec 2007
Location: Perth Australia
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New Sigma 18-125mm

I have been looking for a small, light walk-around lens for my K20D.
The 18-200 Tamron which worked very well on the K100D was disappointing on the K20 - soft near extremities and seemed to show less resolution in the higher pixel images.
Used an F 35-70 for a while which produced extremely good images but lacked the zoom range essential for a general purpose lens.

The new Sigma gives excellent images throughout the zoom range with edge to edge sharpness and no light fall off that I can see.

Lesson learnt from all this - Best images from my embarassingly large lens collection are from primes then 2 times zoom (35-70), 4 times zoom (28-70), 7 times zoom (new Sigma) and the 10 times last. Makes optical sense really.

Sigma 18-125mm, K20D, f11, 1/500, FL100mm, ISO100

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Last edited by garth1948; 09-20-2008 at 12:00 AM.

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